diff --git a/lib/Alchemy/Phrasea/Controller/Root/SessionController.php b/lib/Alchemy/Phrasea/Controller/Root/SessionController.php
index ece103e59c..5070ca33ba 100644
--- a/lib/Alchemy/Phrasea/Controller/Root/SessionController.php
+++ b/lib/Alchemy/Phrasea/Controller/Root/SessionController.php
@@ -86,7 +86,7 @@ class SessionController extends Controller
             }
 
             if ($this->getConf()->get(['registry', 'maintenance', 'enabled'], false)) {
-                $ret['message'] .= strip_tags($this->getConf()->get(['registry', 'maintenance', 'enabled']));
+                $ret['message'] .= strip_tags($this->getConf()->get(['registry', 'maintenance', 'message']));
             }
         }
 
diff --git a/lib/Alchemy/Phrasea/Controller/User/UserPreferenceController.php b/lib/Alchemy/Phrasea/Controller/User/UserPreferenceController.php
index c060ca161c..b313982aee 100644
--- a/lib/Alchemy/Phrasea/Controller/User/UserPreferenceController.php
+++ b/lib/Alchemy/Phrasea/Controller/User/UserPreferenceController.php
@@ -34,7 +34,7 @@ class UserPreferenceController extends Controller
         $success = false;
         $msg = $this->app->trans('Error while saving preference');
 
-        if ($prop && $value) {
+        if (!is_null($prop) && !is_null($value)) {
             $this->getSession()->set('phraseanet.' . $prop, $value);
             $success = true;
             $msg = $this->app->trans('Preference saved !');
diff --git a/resources/www/common/js/jquery.common.js b/resources/www/common/js/jquery.common.js
index 30f27ecb9b..c7c70a3529 100644
--- a/resources/www/common/js/jquery.common.js
+++ b/resources/www/common/js/jquery.common.js
@@ -384,7 +384,7 @@ function manageSession(data, showMessages) {
                 $('body').append('<div id="#MESSAGE"></div>');
             $('#MESSAGE')
                 .empty()
-                .append(data.message + '<div style="margin:20px;"><input type="checkbox" class="dialog_remove" />' + language.hideMessage + '</div>')
+                .append('<div style="margin:30px 10px;"><h4><b>' + data.message + '</b></h4></div><div style="margin:20px 0px 10px;"><label class="checkbox"><input type="checkbox" class="dialog_remove" />' + language.hideMessage + '</label></div>')
                 .attr('title', 'Global Message')
                 .dialog({
                     autoOpen: false,
@@ -393,8 +393,20 @@ function manageSession(data, showMessages) {
                     draggable: false,
                     modal: true,
                     close: function () {
-                        if ($('.dialog_remove:checked', $(this)).length > 0)
-                            setTemporaryPref('message', 0);
+                        if ($('.dialog_remove:checked', $(this)).length > 0) {
+                            // setTemporaryPref
+                            $.ajax({
+                                type: "POST",
+                                url: "/user/preferences/temporary/",
+                                data: {
+                                    prop: 'message',
+                                    value: 0
+                                },
+                                success: function (data) {
+                                    return;
+                                }
+                            });
+                        }
                     }
                 })
                 .dialog('open');