--- a/mobile/android/chrome/content/OfflineApps.js
+++ b/mobile/android/chrome/content/OfflineApps.js
@@ -37,17 +37,17 @@ var OfflineApps = {
     {
       label: strings.GetStringFromName("offlineApps.dontAllow2"),
       callback: function(aChecked) {
         if (aChecked)
           OfflineApps.disallowSite(aContentWindow.document);
       }
     }];
 
-    let requestor = chromeWin.BrowserApp.manifest ? "'" + chromeWin.BrowserApp.manifest.name + "'" : host;
+    let requestor = BrowserApp.manifest ? "'" + BrowserApp.manifest.name + "'" : host;
     let message = strings.formatStringFromName("offlineApps.ask", [requestor], 1);
     let options = { checkbox: Strings.browser.GetStringFromName("offlineApps.dontAskAgain") };
     NativeWindow.doorhanger.show(message, notificationID, buttons, tab.id, options);
   },
 
   allowSite: function(aDocument) {
     Services.perms.add(aDocument.documentURIObject, "offline-app", Services.perms.ALLOW_ACTION);