diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index d88ef4223..fc07ab4ec 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -475,6 +475,11 @@ export class Notification extends GObject.Object {
 
     destroy(reason = NotificationDestroyedReason.DISMISSED) {
         this.emit('destroy', reason);
+
+        if (this._updateDatetimeId)
+            GLib.source_remove(this._updateDatetimeId);
+        delete this._updateDatetimeId;
+
         this.run_dispose();
     }
 }