diff --git a/browser/base/content/contentAreaUtils.js b/browser/base/content/contentAreaUtils.js
index fd217eb2890b..caada093fe0c 100644
--- a/browser/base/content/contentAreaUtils.js
+++ b/browser/base/content/contentAreaUtils.js
@@ -685,7 +685,7 @@ function getStringBundle()
   const lsContractID = "@mozilla.org/intl/nslocaleservice;1";
   const lsIID = Components.interfaces.nsILocaleService;
   const ls = Components.classes[lsContractID].getService(lsIID);
-  var appLocale = ls.GetApplicationLocale();
+  var appLocale = ls.getApplicationLocale();
   return sbs.createBundle(bundleURL, appLocale);    
 }
 
diff --git a/browser/components/bookmarks/content/bookmarks.js b/browser/components/bookmarks/content/bookmarks.js
index a4715e5d4015..9af9ac2cd216 100644
--- a/browser/components/bookmarks/content/bookmarks.js
+++ b/browser/components/bookmarks/content/bookmarks.js
@@ -1013,9 +1013,9 @@ var BookmarksUtils = {
       var BUNDLESVC = Components.classes["@mozilla.org/intl/stringbundle;1"]
                                 .getService(Components.interfaces.nsIStringBundleService);
       var bookmarksBundle  = "chrome://browser/locale/bookmarks/bookmarks.properties";
-      this._bundle         = BUNDLESVC.createBundle(bookmarksBundle, LOCALESVC.GetApplicationLocale());
+      this._bundle         = BUNDLESVC.createBundle(bookmarksBundle, LOCALESVC.getApplicationLocale());
       var brandBundle      = "chrome://global/locale/brand.properties";
-      this._brandShortName = BUNDLESVC.createBundle(brandBundle,     LOCALESVC.GetApplicationLocale())
+      this._brandShortName = BUNDLESVC.createBundle(brandBundle,     LOCALESVC.getApplicationLocale())
                                       .GetStringFromName("brandShortName");
     }
    
diff --git a/toolkit/content/widgets/browser.xml b/toolkit/content/widgets/browser.xml
index dc580c35ac0c..753d2dc3f52f 100644
--- a/toolkit/content/widgets/browser.xml
+++ b/toolkit/content/widgets/browser.xml
@@ -283,7 +283,7 @@
             var stringBundleService = Components.classes["@mozilla.org/intl/stringbundle;1"]
                                   .getService(Components.interfaces.nsIStringBundleService);
             var bundleURL = "chrome://global/locale/tabbrowser.properties";
-            this._mStrBundle = stringBundleService.createBundle(bundleURL, localeService.GetApplicationLocale());
+            this._mStrBundle = stringBundleService.createBundle(bundleURL, localeService.getApplicationLocale());
           }
           return this._mStrBundle;
         ]]></getter>
diff --git a/toolkit/content/widgets/stringbundle.xml b/toolkit/content/widgets/stringbundle.xml
index 2a9ae82daa89..0429c2f7a8a6 100644
--- a/toolkit/content/widgets/stringbundle.xml
+++ b/toolkit/content/widgets/stringbundle.xml
@@ -68,7 +68,7 @@
             try {
               var localeService = Components.classes["@mozilla.org/intl/nslocaleservice;1"]
                                             .getService(Components.interfaces.nsILocaleService);
-              return localeService.GetApplicationLocale();
+              return localeService.getApplicationLocale();
             }
             catch (ex) {
               return null;
diff --git a/toolkit/content/widgets/wizard.xml b/toolkit/content/widgets/wizard.xml
index 5ef3fd54fcc0..4e657bbdbf9c 100644
--- a/toolkit/content/widgets/wizard.xml
+++ b/toolkit/content/widgets/wizard.xml
@@ -154,7 +154,7 @@
                               .getService(Components.interfaces.nsILocaleService);
         var stringBundleService = Components.classes["@mozilla.org/intl/stringbundle;1"].getService(Components.interfaces.nsIStringBundleService);
         var bundleURL = "chrome://global/locale/wizard.properties";
-        this._bundle = stringBundleService.createBundle(bundleURL, localeService.GetApplicationLocale());
+        this._bundle = stringBundleService.createBundle(bundleURL, localeService.getApplicationLocale());
         
         // get anonymous content references
         this._wizardHeader = document.getAnonymousElementByAttribute(this, "anonid", "Header");
diff --git a/toolkit/xre/nsAppRunner.cpp b/toolkit/xre/nsAppRunner.cpp
index 82b0b29e45d6..262fd43f7bae 100644
--- a/toolkit/xre/nsAppRunner.cpp
+++ b/toolkit/xre/nsAppRunner.cpp
@@ -820,9 +820,9 @@ getUILangCountry(nsAString& aUILang, nsAString& aCountry)
   nsCOMPtr<nsILocaleService> localeService = do_GetService(NS_LOCALESERVICE_CONTRACTID, &result);
   NS_ASSERTION(NS_SUCCEEDED(result),"getUILangCountry: get locale service failed");
 
-  nsXPIDLString uiLang;
-  result = localeService->GetLocaleComponentForUserAgent(getter_Copies(uiLang));
-  aUILang = uiLang;
+  result = localeService->GetLocaleComponentForUserAgent(aUILang);
+  NS_ASSERTION(NS_SUCCEEDED(result),
+          "getUILangCountry: get locale componet for user agent failed");
   result = getCountry(aUILang, aCountry);
   return result;
 }