diff --git a/messagingmenu@lauinger-clan.de/extension.js b/messagingmenu@lauinger-clan.de/extension.js
index 743f657..dfcbfee 100644
--- a/messagingmenu@lauinger-clan.de/extension.js
+++ b/messagingmenu@lauinger-clan.de/extension.js
@@ -564,7 +564,7 @@ class MessagingMenu {
     }
 
     disable() {
-        Main.messageTray.disconnect(_queuechanged_handler);
+        Main.messageTray.disconnect(this._queuechanged_handler);
         this._indicator.destroy();
         this._indicator = null;
         this._settings = null;