--- a/mobile/chrome/content/OfflineApps.js
+++ b/mobile/chrome/content/OfflineApps.js
@@ -17,17 +17,17 @@ var OfflineApps = {
         // all pages can use offline capabilities, no need to ask the user
         return;
       }
     } catch(e) {
       // this pref isn't set by default, ignore failures
     }
 
     let host = currentURI.asciiHost;
-    let notificationID = "offline-app-requested-" host;
+    let notificationID = "offline-app-requested-" + host;
     let notificationBox = Browser.getNotificationBox();
 
     let notification = notificationBox.getNotificationWithValue(notificationID);
     let strings = Strings.browser;
     if (notification) {
       notification.documents.push(aRequest);
     } else {
       let buttons = [{

--- a/mobile/chrome/jar.mn
+++ b/mobile/chrome/jar.mn
@@ -24,16 +24,17 @@ chrome.jar:
 * content/common-ui.js                 (content/common-ui.js)
   content/AlertsHelper.js              (content/AlertsHelper.js)
   content/AppMenu.js                   (content/AppMenu.js)
   content/AwesomePanel.js              (content/AwesomePanel.js)
   content/BookmarkHelper.js            (content/BookmarkHelper.js)
   content/BookmarkPopup.js             (content/BookmarkPopup.js)
 * content/ContextCommands.js           (content/ContextCommands.js)
   content/MenuListHelperUI.js          (content/MenuListHelperUI.js)
+  content/OfflineApps.js               (content/OfflineApps.js)
   content/SelectHelperUI.js            (content/SelectHelperUI.js)
   content/SharingUI.js                 (content/SharingUI.js)
 * content/content.js                   (content/content.js)
   content/commandUtil.js               (content/commandUtil.js)
 * content/bindings.xml                 (content/bindings.xml)
   content/tabs.xml                     (content/tabs.xml)
   content/bindings/checkbox.xml        (content/bindings/checkbox.xml)
   content/bindings/browser.xml         (content/bindings/browser.xml)