--- a/mobile/android/components/HelperAppDialog.js
+++ b/mobile/android/components/HelperAppDialog.js
@@ -221,16 +221,17 @@ HelperAppLauncherDialog.prototype = {
       buttons: [
         newButtonOrder ? alwaysUse : justOnce,
         newButtonOrder ? justOnce : alwaysUse
       ],
       // Tapping an app twice should choose "Just once".
       doubleTapButton: newButtonOrder ? 1 : 0
     }, (data) => {
       if (data.button < 0) {
+        aLauncher.cancel(Cr.NS_BINDING_ABORTED);
         return;
       }
 
       callback(apps[data.icongrid0]);
 
       if (data.button === (newButtonOrder ? 0 : 1)) {
         this._setPreferredApp(aLauncher, apps[data.icongrid0]);
       }