diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index 4a949d4b0..e0d63448f 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -258,6 +258,8 @@ const NotificationApplicationPolicy = new Lang.Class({
 
     _changed: function(settings, key) {
         this.emit('policy-changed', key);
+        if (key == 'enable')
+            this.emit('enable-changed');
     },
 
     _canonicalizeId: function(id) {