--- a/b2g/components/AlertsHelper.jsm
+++ b/b2g/components/AlertsHelper.jsm
@@ -227,26 +227,26 @@ let AlertsHelper = {
     try {
       let data = Cu.cloneInto(dataObj, {});
     } catch(e) { dataObj = null; }
 
     return dataObj;
   },
 
   showNotification: function(imageURL, title, text, textClickable, cookie,
-                             uid, bidi, lang, dataObj, manifestURL, timestamp,
+                             uid, dir, lang, dataObj, manifestURL, timestamp,
                              behavior) {
     function send(appName, appIcon) {
       SystemAppProxy._sendCustomEvent(kMozChromeNotificationEvent, {
         type: kDesktopNotification,
         id: uid,
         icon: imageURL,
         title: title,
         text: text,
-        bidi: bidi,
+        dir: dir,
         lang: lang,
         appName: appName,
         appIcon: appIcon,
         manifestURL: manifestURL,
         timestamp: timestamp,
         data: dataObj,
         mozbehavior: behavior
       });
@@ -271,17 +271,17 @@ let AlertsHelper = {
     let currentListener = this._listeners[data.name];
     if (currentListener && currentListener.observer) {
       currentListener.observer.observe(null, kTopicAlertFinished, currentListener.cookie);
     }
 
     let dataObj = this.deserializeStructuredClone(data.dataStr);
     this.registerListener(data.name, data.cookie, data.alertListener);
     this.showNotification(data.imageURL, data.title, data.text,
-                          data.textClickable, data.cookie, data.name, data.bidi,
+                          data.textClickable, data.cookie, data.name, data.dir,
                           data.lang, dataObj, null, data.inPrivateBrowsing);
   },
 
   showAppNotification: function(aMessage) {
     let data = aMessage.data;
     let details = data.details;
     let dataObject = this.deserializeStructuredClone(details.data);
     let listener = {