diff --git a/js/ui/calendar.js b/js/ui/calendar.js
index 990cac243..815c9f9c9 100644
--- a/js/ui/calendar.js
+++ b/js/ui/calendar.js
@@ -803,6 +803,8 @@ var NotificationMessage = new Lang.Class({
     },
 
     _onDestroy() {
+        this.parent();
+
         if (this._updatedId)
             this.notification.disconnect(this._updatedId);
         this._updatedId = 0;