diff --git a/lib/Alchemy/Phrasea/Controller/LazyLocator.php b/lib/Alchemy/Phrasea/Controller/LazyLocator.php
new file mode 100644
index 0000000000..825178f4fc
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Controller/LazyLocator.php
@@ -0,0 +1,32 @@
+<?php
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2015 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace Alchemy\Phrasea\Controller;
+
+class LazyLocator
+{
+    /** @var \Pimple */
+    private $pimple;
+    private $serviceId;
+
+    /**
+     * @param \Pimple $pimple
+     * @param string  $serviceId
+     */
+    public function __construct(\Pimple $pimple, $serviceId)
+    {
+        $this->pimple = $pimple;
+        $this->serviceId = $serviceId;
+    }
+
+    public function __invoke()
+    {
+        return $this->pimple->offsetGet($this->serviceId);
+    }
+}
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Admin/Collection.php b/lib/Alchemy/Phrasea/ControllerProvider/Admin/Collection.php
index cf95eb7c87..5534416c23 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Admin/Collection.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Admin/Collection.php
@@ -13,10 +13,12 @@ namespace Alchemy\Phrasea\ControllerProvider\Admin;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
 use Alchemy\Phrasea\Controller\Admin\CollectionController;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
 use Silex\ControllerProviderInterface;
 use Silex\ServiceProviderInterface;
+use Symfony\Component\HttpFoundation\Request;
 
 class Collection implements ControllerProviderInterface, ServiceProviderInterface
 {
@@ -26,9 +28,7 @@ class Collection implements ControllerProviderInterface, ServiceProviderInterfac
     {
         $app['controller.admin.collection'] = $app->share(function (PhraseaApplication $app) {
             return (new CollectionController($app))
-                ->setUserQueryFactory(function () use ($app) {
-                    return $app['phraseanet.user-query'];
-                })
+                ->setUserQueryFactory(new LazyLocator($app, 'phraseanet.user-query'))
             ;
         });
     }
@@ -40,10 +40,12 @@ class Collection implements ControllerProviderInterface, ServiceProviderInterfac
     public function connect(Application $app)
     {
         $controllers = $this->createAuthenticatedCollection($app);
+        $firewall = $this->getFirewall($app);
 
-        $controllers->before(function () use ($app) {
-            $app['firewall']->requireAccessToModule('admin')
-                ->requireRightOnBase($app['request']->attributes->get('bas_id'), 'canadmin');
+        $controllers->before(function (Request $request) use ($firewall) {
+            $firewall
+                ->requireAccessToModule('admin')
+                ->requireRightOnBase($request->attributes->get('bas_id'), 'canadmin');
         });
 
         $controllers->get('/{bas_id}/', 'controller.admin.collection:getCollection')
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Admin/ConnectedUsers.php b/lib/Alchemy/Phrasea/ControllerProvider/Admin/ConnectedUsers.php
index a81a02caa7..47c668616d 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Admin/ConnectedUsers.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Admin/ConnectedUsers.php
@@ -46,9 +46,10 @@ class ConnectedUsers implements ControllerProviderInterface, ServiceProviderInte
     public function connect(Application $app)
     {
         $controllers = $this->createAuthenticatedCollection($app);
+        $firewall = $this->getFirewall($app);
 
-        $controllers->before(function () use ($app) {
-            $app['firewall']->requireAccessToModule('Admin');
+        $controllers->before(function () use ($firewall) {
+            $firewall->requireAccessToModule('Admin');
         });
 
         $controllers->get('/', 'controller.admin.connected-users:listConnectedUsers')
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Admin/Dashboard.php b/lib/Alchemy/Phrasea/ControllerProvider/Admin/Dashboard.php
index 90eb56ae23..a2f66455e4 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Admin/Dashboard.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Admin/Dashboard.php
@@ -13,6 +13,8 @@ namespace Alchemy\Phrasea\ControllerProvider\Admin;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
 use Alchemy\Phrasea\Controller\Admin\DashboardController;
+use Alchemy\Phrasea\Controller\LazyLocator;
+use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
 use Silex\ControllerCollection;
 use Silex\ControllerProviderInterface;
@@ -20,13 +22,14 @@ use Silex\ServiceProviderInterface;
 
 class Dashboard implements ControllerProviderInterface, ServiceProviderInterface
 {
+    use ControllerProviderTrait;
+
     public function register(Application $app)
     {
         $app['controller.admin.dashboard'] = $app->share(function (PhraseaApplication $app) {
             return (new DashboardController($app))
-                ->setDelivererLocator(function () use ($app) {
-                    return $app['notification.deliverer'];
-                });
+                ->setDelivererLocator(new LazyLocator($app, 'notification.deliverer'))
+            ;
         });
     }
 
@@ -36,11 +39,11 @@ class Dashboard implements ControllerProviderInterface, ServiceProviderInterface
 
     public function connect(Application $app)
     {
-        /** @var ControllerCollection $controllers */
-        $controllers = $app['controllers_factory'];
+        $controllers = $this->createCollection($app);
+        $firewall = $this->getFirewall($app);
 
-        $controllers->before(function () use ($app) {
-            $app['firewall']->requireAdmin();
+        $controllers->before(function () use ($firewall) {
+            $firewall->requireAdmin();
         });
 
         $controllers->get('/', 'controller.admin.dashboard:slash')
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Admin/Databox.php b/lib/Alchemy/Phrasea/ControllerProvider/Admin/Databox.php
index 317e477197..18925ea9f9 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Admin/Databox.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Admin/Databox.php
@@ -13,6 +13,7 @@ namespace Alchemy\Phrasea\ControllerProvider\Admin;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
 use Alchemy\Phrasea\Controller\Admin\DataboxController;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Alchemy\Phrasea\Security\Firewall;
 use Silex\Application;
@@ -28,9 +29,7 @@ class Databox implements ControllerProviderInterface, ServiceProviderInterface
     {
         $app['controller.admin.databox'] = $app->share(function (PhraseaApplication $app) {
             return (new DataboxController($app))
-                ->setUserQueryFactory(function () use ($app) {
-                    return $app['phraseanet.user-query'];
-                })
+                ->setUserQueryFactory(new LazyLocator($app, 'phraseanet.user-query'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Admin/Users.php b/lib/Alchemy/Phrasea/ControllerProvider/Admin/Users.php
index 8952e8a887..6896148537 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Admin/Users.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Admin/Users.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Admin;
 
 use Alchemy\Phrasea\Controller\Admin\UserController;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
 use Silex\ControllerProviderInterface;
@@ -25,12 +26,8 @@ class Users implements ControllerProviderInterface, ServiceProviderInterface
     {
         $app['controller.admin.users'] = $app->share(function () use ($app) {
             return (new UserController($app))
-                ->setDelivererLocator(function () use ($app) {
-                    return $app['notification.deliverer'];
-                })
-                ->setUserQueryFactory(function () use ($app) {
-                    return $app['phraseanet.user-query'];
-                })
+                ->setDelivererLocator(new LazyLocator($app, 'notification.deliverer'))
+                ->setUserQueryFactory(new LazyLocator($app, 'phraseanet.user-query'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Datafiles.php b/lib/Alchemy/Phrasea/ControllerProvider/Datafiles.php
index 93bcf4d1fd..c1e7757438 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Datafiles.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Datafiles.php
@@ -13,6 +13,7 @@ namespace Alchemy\Phrasea\ControllerProvider;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
 use Alchemy\Phrasea\Controller\DatafileController;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Silex\Application;
 use Silex\ControllerProviderInterface;
 use Silex\ServiceProviderInterface;
@@ -25,9 +26,8 @@ class Datafiles implements ControllerProviderInterface, ServiceProviderInterface
         $app['controller.datafiles'] = $app->share(function (PhraseaApplication $app) {
             return (new DatafileController($app, $app['phraseanet.appbox'], $app['acl'], $app['authentication']))
                 ->setDataboxLoggerLocator($app['phraseanet.logger'])
-                ->setDelivererLocator(function () use ($app) {
-                    return $app['phraseanet.file-serve'];
-                });
+                ->setDelivererLocator(new LazyLocator($app, 'phraseanet.file-serve'))
+            ;
         });
     }
 
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Permalink.php b/lib/Alchemy/Phrasea/ControllerProvider/Permalink.php
index 06364f4a93..72bcdf08fe 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Permalink.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Permalink.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\PermalinkController;
 use Silex\Application;
 use Silex\ControllerCollection;
@@ -25,9 +26,8 @@ class Permalink implements ControllerProviderInterface, ServiceProviderInterface
         $app['controller.permalink'] = $app->share(function (PhraseaApplication $app) {
             return (new PermalinkController($app, $app['phraseanet.appbox'], $app['acl'], $app['authentication']))
                 ->setDataboxLoggerLocator($app['phraseanet.logger'])
-                ->setDelivererLocator(function () use ($app) {
-                    return $app['phraseanet.file-serve'];
-                });
+                ->setDelivererLocator(new LazyLocator($app, 'phraseanet.file-serve'))
+            ;
         });
     }
 
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/DoDownload.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/DoDownload.php
index 7d217ae12a..251e075c75 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/DoDownload.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/DoDownload.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\DoDownloadController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -26,13 +27,10 @@ class DoDownload implements ControllerProviderInterface, ServiceProviderInterfac
     {
         $app['controller.prod.do-download'] = $app->share(function (PhraseaApplication $app) {
             return (new DoDownloadController($app))
-                ->setDelivererLocator(function () use ($app) {
-                    return $app['phraseanet.file-serve'];
-                })
+                ->setDelivererLocator(new LazyLocator($app, 'phraseanet.file-serve'))
                 ->setDispatcher($app['dispatcher'])
-                ->setFileSystemLocator(function () use ($app) {
-                    return $app['filesystem'];
-                });
+                ->setFileSystemLocator(new LazyLocator($app, 'filesystem'))
+            ;
         });
     }
 
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Edit.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Edit.php
index 8503615f07..e0919be956 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Edit.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Edit.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\EditController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -28,9 +29,7 @@ class Edit implements ControllerProviderInterface, ServiceProviderInterface
             return (new EditController($app))
                 ->setDataboxLoggerLocator($app['phraseanet.logger'])
                 ->setDispatcher($app['dispatcher'])
-                ->setSubDefinitionSubstituerLocator(function () use ($app) {
-                    return $app['subdef.substituer'];
-                })
+                ->setSubDefinitionSubstituerLocator(new LazyLocator($app, 'subdef.substituer'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Export.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Export.php
index e77e0fc601..4da64bf878 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Export.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Export.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\ExportController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -27,12 +28,8 @@ class Export implements ControllerProviderInterface, ServiceProviderInterface
         $app['controller.prod.export'] = $app->share(function (PhraseaApplication $app) {
             return (new ExportController($app))
                 ->setDispatcher($app['dispatcher'])
-                ->setFileSystemLocator(function () use ($app) {
-                    return $app['filesystem'];
-                })
-                ->setDelivererLocator(function () use ($app) {
-                    return $app['notification.deliverer'];
-                })
+                ->setFileSystemLocator(new LazyLocator($app, 'filesystem'))
+                ->setDelivererLocator(new LazyLocator($app, 'notification.deliverer'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Lazaret.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Lazaret.php
index a70aa9e757..170637a9dc 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Lazaret.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Lazaret.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\LazaretController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -27,18 +28,10 @@ class Lazaret implements ControllerProviderInterface, ServiceProviderInterface
         $app['controller.prod.lazaret'] = $app->share(function (PhraseaApplication $app) {
             return (new LazaretController($app))
                 ->setDataboxLoggerLocator($app['phraseanet.logger'])
-                ->setDelivererLocator(function () use ($app) {
-                    return $app['phraseanet.file-serve'];
-                })
-                ->setEntityManagerLocator(function () use ($app) {
-                    return $app['orm.em'];
-                })
-                ->setFileSystemLocator(function () use ($app) {
-                    return $app['filesystem'];
-                })
-                ->setSubDefinitionSubstituerLocator(function () use ($app) {
-                    return $app['subdef.substituer'];
-                })
+                ->setDelivererLocator(new LazyLocator($app, 'phraseanet.file-serve'))
+                ->setEntityManagerLocator(new LazyLocator($app, 'orm.em'))
+                ->setFileSystemLocator(new LazyLocator($app, 'filesystem'))
+                ->setSubDefinitionSubstituerLocator(new LazyLocator($app, 'subdef.substituer'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Order.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Order.php
index 5c00c5fccc..17f5a1888a 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Order.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Order.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\OrderController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -27,12 +28,8 @@ class Order implements ControllerProviderInterface, ServiceProviderInterface
         $app['controller.prod.order'] = $app->share(function (PhraseaApplication $app) {
             return (new OrderController($app))
                 ->setDispatcher($app['dispatcher'])
-                ->setEntityManagerLocator(function () use ($app) {
-                    return $app['orm.em'];
-                })
-                ->setUserQueryFactory(function () use ($app) {
-                    return $app['phraseanet.user-query'];
-                })
+                ->setEntityManagerLocator(new LazyLocator($app, 'orm.em'))
+                ->setUserQueryFactory(new LazyLocator($app, 'phraseanet.user-query'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Push.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Push.php
index bf24f3fe28..3c8f0373e4 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Push.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Push.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\PushController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -28,12 +29,8 @@ class Push implements ControllerProviderInterface, ServiceProviderInterface
             return (new PushController($app))
                 ->setDataboxLoggerLocator($app['phraseanet.logger'])
                 ->setDispatcher($app['dispatcher'])
-                ->setEntityManagerLocator(function () use ($app) {
-                    return $app['orm.em'];
-                })
-                ->setUserQueryFactory(function () use ($app) {
-                    return $app['phraseanet.user-query'];
-                })
+                ->setEntityManagerLocator(new LazyLocator($app, 'orm.em'))
+                ->setUserQueryFactory(new LazyLocator($app, 'phraseanet.user-query'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Query.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Query.php
index c225e58265..7310077e82 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Query.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Query.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\QueryController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -26,12 +27,8 @@ class Query implements ControllerProviderInterface, ServiceProviderInterface
     {
         $app['controller.prod.query'] = $app->share(function (PhraseaApplication $app) {
             return (new QueryController($app))
-                ->setSearchEngineLocator(function () use ($app) {
-                    return $app['phraseanet.SE'];
-                })
-                ->setSearchEngineLoggerLocator(function () use ($app) {
-                    return $app['phraseanet.SE.logger'];
-                })
+                ->setSearchEngineLocator(new LazyLocator($app, 'phraseanet.SE'))
+                ->setSearchEngineLoggerLocator(new LazyLocator($app, 'phraseanet.SE.logger'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Record.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Record.php
index c91c936a40..25bc501751 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Record.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Record.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\RecordController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -26,12 +27,8 @@ class Record implements ControllerProviderInterface, ServiceProviderInterface
     {
         $app['controller.prod.records'] = $app->share(function (PhraseaApplication $app) {
             return (new RecordController($app))
-                ->setEntityManagerLocator(function () use ($app) {
-                    return $app['orm.em'];
-                })
-                ->setSearchEngineLocator(function () use ($app) {
-                    return $app['phraseanet.SE'];
-                })
+                ->setEntityManagerLocator(new LazyLocator($app, 'orm.em'))
+                ->setSearchEngineLocator(new LazyLocator($app, 'phraseanet.SE'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Story.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Story.php
index 811345c59e..6fc324d5db 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Story.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Story.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\StoryController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -27,9 +28,7 @@ class Story implements ControllerProviderInterface, ServiceProviderInterface
         $app['controller.prod.story'] = $app->share(function (PhraseaApplication $app) {
             return (new StoryController($app))
                 ->setDispatcher($app['dispatcher'])
-                ->setEntityManagerLocator(function () use ($app) {
-                    return $app['orm.em'];
-                })
+                ->setEntityManagerLocator(new LazyLocator($app, 'orm.em'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Tools.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Tools.php
index e9a689c1b8..d908cbae06 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Tools.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Tools.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\ToolsController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -27,12 +28,8 @@ class Tools implements ControllerProviderInterface, ServiceProviderInterface
         $app['controller.prod.tools'] = $app->share(function (PhraseaApplication $app) {
             return (new ToolsController($app))
                 ->setDataboxLoggerLocator($app['phraseanet.logger'])
-                ->setFileSystemLocator(function () use ($app) {
-                    return $app['filesystem'];
-                })
-                ->setSubDefinitionSubstituerLocator(function () use ($app) {
-                    return $app['subdef.substituer'];
-                })
+                ->setFileSystemLocator(new LazyLocator($app, 'filesystem'))
+                ->setSubDefinitionSubstituerLocator(new LazyLocator($app, 'subdef.substituer'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Tooltip.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Tooltip.php
index 9b766b2750..bad59209f8 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Tooltip.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Tooltip.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\TooltipController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -26,9 +27,7 @@ class Tooltip implements ControllerProviderInterface, ServiceProviderInterface
     {
         $app['controller.prod.tooltip'] = $app->share(function (PhraseaApplication $app) {
             return (new TooltipController($app))
-                ->setSearchEngineLocator(function () use ($app) {
-                    return $app['phraseanet.SE'];
-                })
+                ->setSearchEngineLocator(new LazyLocator($app, 'phraseanet.SE'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Upload.php b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Upload.php
index 498c78a843..f008f71c1b 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Prod/Upload.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Prod/Upload.php
@@ -12,6 +12,7 @@
 namespace Alchemy\Phrasea\ControllerProvider\Prod;
 
 use Alchemy\Phrasea\Application as PhraseaApplication;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Controller\Prod\UploadController;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Silex\Application;
@@ -26,23 +27,13 @@ class Upload implements ControllerProviderInterface, ServiceProviderInterface
     {
         $app['controller.prod.upload'] = $app->share(function (PhraseaApplication $app) {
             return (new UploadController($app))
-                ->setBorderManagerLocator(function () use ($app) {
-                    return $app['border-manager'];
-                })
+                ->setBorderManagerLocator(new LazyLocator($app, 'border-manager'))
                 ->setDispatcher($app['dispatcher'])
                 ->setDataboxLoggerLocator($app['phraseanet.logger'])
-                ->setEntityManagerLocator(function () use ($app) {
-                    return $app['orm.em'];
-                })
-                ->setFileSystemLocator(function () use ($app) {
-                    return $app['filesystem'];
-                })
-                ->setTemporaryFileSystemLocator(function () use ($app) {
-                    return $app['temporary-filesystem'];
-                })
-                ->setSubDefinitionSubstituerLocator(function () use ($app) {
-                    return $app['subdef.substituer'];
-                })
+                ->setEntityManagerLocator(new LazyLocator($app, 'orm.em'))
+                ->setFileSystemLocator(new LazyLocator($app, 'filesystem'))
+                ->setTemporaryFileSystemLocator(new LazyLocator($app, 'temporary-filesystem'))
+                ->setSubDefinitionSubstituerLocator(new LazyLocator($app, 'subdef.substituer'))
             ;
         });
     }
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Root/Account.php b/lib/Alchemy/Phrasea/ControllerProvider/Root/Account.php
index f62a83e16d..bd27c0f118 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Root/Account.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Root/Account.php
@@ -14,6 +14,7 @@ namespace Alchemy\Phrasea\ControllerProvider\Root;
 use Alchemy\Geonames\Exception\ExceptionInterface as GeonamesExceptionInterface;
 use Alchemy\Phrasea\Application as PhraseaApplication;
 use Alchemy\Phrasea\Application\Helper\NotifierAware;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\ControllerProvider\ControllerProviderTrait;
 use Alchemy\Phrasea\ControllerProvider\Root\Login;
 use Alchemy\Phrasea\Exception\InvalidArgumentException;
@@ -37,9 +38,7 @@ class Account implements ControllerProviderInterface
     public function connect(Application $app)
     {
         $app['account.controller'] = $this
-            ->setDelivererLocator(function () use ($app) {
-                return $app['notification.deliverer'];
-            });
+            ->setDelivererLocator(new LazyLocator($app, 'notification.deliverer'));
 
         $controllers = $this->createAuthenticatedCollection($app);
 
diff --git a/lib/Alchemy/Phrasea/ControllerProvider/Root/Login.php b/lib/Alchemy/Phrasea/ControllerProvider/Root/Login.php
index 2cca9141cc..e8f14c7c41 100644
--- a/lib/Alchemy/Phrasea/ControllerProvider/Root/Login.php
+++ b/lib/Alchemy/Phrasea/ControllerProvider/Root/Login.php
@@ -17,6 +17,7 @@ use Alchemy\Phrasea\Authentication\Exception\NotAuthenticatedException;
 use Alchemy\Phrasea\Authentication\Exception\AuthenticationException;
 use Alchemy\Phrasea\Authentication\Context;
 use Alchemy\Phrasea\Authentication\Provider\ProviderInterface;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Core\Event\LogoutEvent;
 use Alchemy\Phrasea\Core\Event\PreAuthenticate;
 use Alchemy\Phrasea\Core\Event\PostAuthenticate;
@@ -99,9 +100,8 @@ class Login implements ControllerProviderInterface
         $controllers = $app['controllers_factory'];
 
         $app['login.controller'] = $this
-            ->setDelivererLocator(function () use ($app) {
-                return $app['notification.deliverer'];
-            });
+            ->setDelivererLocator(new LazyLocator($app, 'notification.deliverer'))
+        ;
 
         $controllers->before(function (Request $request) use ($app) {
             if ($request->getPathInfo() == $app->path('homepage')) {
diff --git a/lib/Alchemy/Phrasea/Core/Event/Subscriber/AbstractNotificationSubscriber.php b/lib/Alchemy/Phrasea/Core/Event/Subscriber/AbstractNotificationSubscriber.php
index f5c4224d9f..10f6ee5748 100644
--- a/lib/Alchemy/Phrasea/Core/Event/Subscriber/AbstractNotificationSubscriber.php
+++ b/lib/Alchemy/Phrasea/Core/Event/Subscriber/AbstractNotificationSubscriber.php
@@ -13,6 +13,7 @@ namespace Alchemy\Phrasea\Core\Event\Subscriber;
 
 use Alchemy\Phrasea\Application;
 use Alchemy\Phrasea\Application\Helper\NotifierAware;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Model\Entities\User;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
@@ -25,9 +26,7 @@ abstract class AbstractNotificationSubscriber implements EventSubscriberInterfac
     public function __construct(Application $app)
     {
         $this->app = $app;
-        $this->setDelivererLocator(function () use ($app) {
-            return $app['notification.deliverer'];
-        });
+        $this->setDelivererLocator(new LazyLocator($app, 'notification.deliverer'));
     }
 
     protected function shouldSendNotificationFor(User $user, $type)
diff --git a/lib/Alchemy/Phrasea/Core/Provider/TasksServiceProvider.php b/lib/Alchemy/Phrasea/Core/Provider/TasksServiceProvider.php
index 0289d81f99..da0e5f09a6 100644
--- a/lib/Alchemy/Phrasea/Core/Provider/TasksServiceProvider.php
+++ b/lib/Alchemy/Phrasea/Core/Provider/TasksServiceProvider.php
@@ -11,6 +11,7 @@
 
 namespace Alchemy\Phrasea\Core\Provider;
 
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\TaskManager\Job\FtpJob;
 use Alchemy\Phrasea\TaskManager\Job\ArchiveJob;
 use Alchemy\Phrasea\TaskManager\Job\BridgeJob;
@@ -75,9 +76,8 @@ class TasksServiceProvider implements ServiceProviderInterface
 
             return [
                 (new FtpJob($app['translator'], $app['dispatcher'], $logger))
-                    ->setDelivererLocator(function () use ($app) {
-                        return $app['notification.deliverer'];
-                    }),
+                    ->setDelivererLocator(new LazyLocator($app, 'notification.deliverer'))
+                ,
                 new ArchiveJob($app['translator'], $app['dispatcher'], $logger),
                 new IndexerJob($app['translator'], $app['dispatcher'], $logger),
                 new BridgeJob($app['translator'], $app['dispatcher'], $logger),
diff --git a/lib/Alchemy/Phrasea/Helper/User/Edit.php b/lib/Alchemy/Phrasea/Helper/User/Edit.php
index 9341b204be..69fd1e48b4 100644
--- a/lib/Alchemy/Phrasea/Helper/User/Edit.php
+++ b/lib/Alchemy/Phrasea/Helper/User/Edit.php
@@ -13,6 +13,7 @@ namespace Alchemy\Phrasea\Helper\User;
 
 use Alchemy\Phrasea\Application;
 use Alchemy\Phrasea\Application\Helper\NotifierAware;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Exception\InvalidArgumentException;
 use Alchemy\Phrasea\Model\Entities\User;
 use Alchemy\Phrasea\Notification\Mail\MailSuccessEmailUpdate;
@@ -38,9 +39,7 @@ class Edit extends \Alchemy\Phrasea\Helper\Helper
     public function __construct(Application $app, Request $Request)
     {
         parent::__construct($app, $Request);
-        $this->setDelivererLocator(function () use ($app) {
-            return $app['notification.deliverer'];
-        });
+        $this->setDelivererLocator(new LazyLocator($app, 'notification.deliverer'));
 
         $this->users = explode(';', $Request->get('users'));
 
diff --git a/lib/Alchemy/Phrasea/Helper/User/Manage.php b/lib/Alchemy/Phrasea/Helper/User/Manage.php
index 24ec52107e..b18c6a5cb9 100644
--- a/lib/Alchemy/Phrasea/Helper/User/Manage.php
+++ b/lib/Alchemy/Phrasea/Helper/User/Manage.php
@@ -13,6 +13,7 @@ namespace Alchemy\Phrasea\Helper\User;
 
 use Alchemy\Phrasea\Application;
 use Alchemy\Phrasea\Application\Helper\NotifierAware;
+use Alchemy\Phrasea\Controller\LazyLocator;
 use Alchemy\Phrasea\Exception\InvalidArgumentException;
 use Alchemy\Phrasea\Helper\Helper;
 use Alchemy\Phrasea\Notification\Receiver;
@@ -38,9 +39,7 @@ class Manage extends Helper
     {
         parent::__construct($app, $Request);
 
-        $this->setDelivererLocator(function () use ($app) {
-            return $app['notification.deliverer'];
-        });
+        $this->setDelivererLocator(new LazyLocator($app, 'notification.deliverer'));
     }
 
     /**