diff --git a/library/core/class.applicationmanager.php b/library/core/class.applicationmanager.php
index 4094fc30e6a..f1f3aa42670 100755
--- a/library/core/class.applicationmanager.php
+++ b/library/core/class.applicationmanager.php
@@ -190,7 +190,7 @@ public function TestApplication($ApplicationName, &$Validation) {
          throw new Exception(T('The application folder was not properly defined.'));
       
       // Hook directly into the autoloader and force it to load the newly tested application
-      Gdn_Autoloader::AttachApplication($ApplicationName);
+      Gdn_Autoloader::AttachApplication($ApplicationFolder);
       
       // Redefine the locale manager's settings $Locale->Set($CurrentLocale, $EnabledApps, $EnabledPlugins, TRUE);
       $Locale = Gdn::Locale();