diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index f4ceb0ae7..970d2dd9d 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -162,6 +162,10 @@ var NotificationPolicy = GObject.registerClass({
         this.run_dispose();
     }
 
+    get enable() {
+        return true;
+    }
+
     get enableSound() {
         return true;
     }