diff --git a/js/ui/main.js b/js/ui/main.js
index c160fee0d..6b7218b71 100644
--- a/js/ui/main.js
+++ b/js/ui/main.js
@@ -332,6 +332,7 @@ function _windowRemoved(workspace, window) {
             workspace._lastRemovedWindow = null;
             _queueCheckWorkspaces();
         }
+        return false;
     });
 }
 
diff --git a/js/ui/polkitAuthenticationAgent.js b/js/ui/polkitAuthenticationAgent.js
index ff2d35c08..fc9ceacb9 100644
--- a/js/ui/polkitAuthenticationAgent.js
+++ b/js/ui/polkitAuthenticationAgent.js
@@ -393,6 +393,7 @@ const AuthenticationAgent = new Lang.Class({
                                  Lang.bind(this,
                                            function() {
                                                this._reallyCompleteRequest(wasDismissed);
+                                               return false;
                                            }));
         } else {
             this._reallyCompleteRequest(wasDismissed);