diff --git a/lib/Alchemy/Phrasea/Controller/Admin/Root.php b/lib/Alchemy/Phrasea/Controller/Admin/Root.php
index cdf0a8c4ad..d2b11ee42c 100644
--- a/lib/Alchemy/Phrasea/Controller/Admin/Root.php
+++ b/lib/Alchemy/Phrasea/Controller/Admin/Root.php
@@ -108,8 +108,6 @@ class Root implements ControllerProviderInterface
                 return $app->redirectPath('logout');
             }
 
-            $section = $request->query->get('section', false);
-
             $available = array(
                 'connected',
                 'registrations',
diff --git a/templates/web/admin/collection/collection.html.twig b/templates/web/admin/collection/collection.html.twig
index 63064ef6da..ace6960dd0 100644
--- a/templates/web/admin/collection/collection.html.twig
+++ b/templates/web/admin/collection/collection.html.twig
@@ -123,7 +123,7 @@
     </form>
 
     <form style="display:inline; margin:0;" method="post" action="{{ path('admin_collection_empty', { 'bas_id' : bas_id }) }}">
-        <button type="button" class="btn confirm submiter" data-confirm-msg="{% trans 'admin::base:collection: etes vous sur de vider la collection ?' %}">
+        <button type="button" class="btn confirm submiter reload" data-confirm-msg="{% trans 'admin::base:collection: etes vous sur de vider la collection ?' %}">
             <img src="/skins/icons/trash.png" />
             {% trans 'admin::base:collection: vider la collection' %}
         </button>
@@ -331,7 +331,7 @@
                 success: function(datas) {
                     if(datas.success) {
                         if(submitLink.hasClass('reload')) {
-                            reloadTree('base:{{ collection.get_sbas_id() }}', true);
+                            reloadTree('collection:{{ collection.get_base_id() }}', true);
                         } else if(submitLink.hasClass('reload-tree')) {
                             reloadTree('bases:bases', true);
                         }
diff --git a/templates/web/admin/databox/databox.html.twig b/templates/web/admin/databox/databox.html.twig
index e29bd24d5a..48139db94b 100644
--- a/templates/web/admin/databox/databox.html.twig
+++ b/templates/web/admin/databox/databox.html.twig
@@ -146,7 +146,7 @@
         </form>
 
         <form style="display:inline;" method="post" action="{{ path('admin_database_empty', {'databox_id': databox.get_sbas_id()}) }}">
-            <button type="button" class="btn submiter confirm" data-confirm-msg="{% trans 'admin::base: Confirmer le vidage complet de la base' %}">
+            <button type="button" class="btn submiter confirm reload" data-confirm-msg="{% trans 'admin::base: Confirmer le vidage complet de la base' %}">
                 <img src="/skins/icons/trash.png" />
                 {% trans "admin::base: vider la base" %}
             </button>
diff --git a/templates/web/admin/index.html.twig b/templates/web/admin/index.html.twig
index 48e9bbf59c..d44bc3f9b9 100644
--- a/templates/web/admin/index.html.twig
+++ b/templates/web/admin/index.html.twig
@@ -150,8 +150,8 @@
       });
       if(click === true)
       {
-        if($('#tree li.selected').length > 0)
-            $('#tree li.selected a').trigger('click');
+        if($('#tree .selected').length > 0)
+            $('#tree .selected a').trigger('click');
         else
             $('.zone_online_users').trigger('click');
       }
diff --git a/templates/web/admin/tree.html.twig b/templates/web/admin/tree.html.twig
index e7d1c5a539..da50ba8b2f 100644
--- a/templates/web/admin/tree.html.twig
+++ b/templates/web/admin/tree.html.twig
@@ -163,8 +163,14 @@
               or collection.get_base_id() in app['authentication'].getUser().ACL.get_granted_base(['manage'])|keys
               or collection.get_base_id() in app['authentication'].getUser().ACL.get_granted_base(['modify_struct'])|keys) %}
 
+          {% if feature == 'collection' and featured == collection.get_base_id() %}
+              {% set coll_selected = true %}
+          {% else %}
+              {% set coll_selected = false %}
+          {% endif %}
+
           <li>
-            <div style="padding:0 0 2px 0;">
+            <div style="padding:0 0 2px 0;" {% if coll_selected %}class="selected"{% endif %}>
                 <a target="right" href="{{ path('admin_display_collection', { 'bas_id' : collection.get_base_id() }) }}" class="ajax">
                     <span>{{ collection.get_name() }}</span>
                 </a>