diff --git a/js/gdm/loginDialog.js b/js/gdm/loginDialog.js
index b400d7982..4150649ab 100644
--- a/js/gdm/loginDialog.js
+++ b/js/gdm/loginDialog.js
@@ -96,7 +96,7 @@ const UserListItem = new Lang.Class({
     },
 
     _onDestroy: function() {
-        this._user.disconnect(this._userChangedId);
+        this.user.disconnect(this._userChangedId);
     },
 
     _onClicked: function() {