diff --git a/lib/Alchemy/Phrasea/Collection/CollectionHelper.php b/lib/Alchemy/Phrasea/Collection/CollectionHelper.php
new file mode 100644
index 0000000000..a56df2e356
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Collection/CollectionHelper.php
@@ -0,0 +1,39 @@
+<?php
+/**
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2016 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Collection;
+
+use Assert\Assertion;
+
+class CollectionHelper
+{
+    private function __construct()
+    {
+    }
+
+    /**
+     * @param \collection[] $collections
+     * @return \collection[]
+     */
+    public static function sort($collections)
+    {
+        Assertion::allIsInstanceOf($collections, \collection::class);
+
+        if ($collections instanceof \Traversable) {
+            $collections = iterator_to_array($collections);
+        }
+
+        usort($collections, function (\collection $left, \collection $right) {
+            return ($left->get_ord() < $right->get_ord()) ? -1 : (($left->get_ord() < $right->get_ord()) ? 1 : 0);
+        });
+
+        return $collections;
+    }
+}
diff --git a/lib/Alchemy/Phrasea/Twig/PhraseanetExtension.php b/lib/Alchemy/Phrasea/Twig/PhraseanetExtension.php
index 56c7040c7d..b1d081ff7a 100644
--- a/lib/Alchemy/Phrasea/Twig/PhraseanetExtension.php
+++ b/lib/Alchemy/Phrasea/Twig/PhraseanetExtension.php
@@ -3,6 +3,7 @@
 namespace Alchemy\Phrasea\Twig;
 
 use Alchemy\Phrasea\Application;
+use Alchemy\Phrasea\Collection\CollectionHelper;
 use Alchemy\Phrasea\Model\Entities\ElasticsearchRecord;
 use Alchemy\Phrasea\Model\Entities\User;
 use Alchemy\Phrasea\Model\RecordInterface;
@@ -22,6 +23,7 @@ class PhraseanetExtension extends \Twig_Extension
     public function getFilters()
     {
         return array(
+            new \Twig_SimpleFilter('sort_collections', array(CollectionHelper::class, 'sort')),
         );
     }
 
diff --git a/templates/web/admin/tree.html.twig b/templates/web/admin/tree.html.twig
index a682e7eb36..259ec05c4c 100644
--- a/templates/web/admin/tree.html.twig
+++ b/templates/web/admin/tree.html.twig
@@ -166,7 +166,7 @@
           </li>
         {% endif %}
 
-        {% for collection in databox.get_collections() %}
+        {% for collection in databox.get_collections()|sort_collections %}
           {% if (collection.get_base_id() in app.getAclForUser(app.getAuthenticatedUser()).get_granted_base(['canadmin'])|keys
               or collection.get_base_id() in app.getAclForUser(app.getAuthenticatedUser()).get_granted_base(['manage'])|keys
               or collection.get_base_id() in app.getAclForUser(app.getAuthenticatedUser()).get_granted_base(['modify_struct'])|keys) %}