diff --git a/event_rewards/php/bootstrap_user_upgrade.php b/event_rewards/php/bootstrap_user_upgrade.php
index 474ec54..567eb40 100644
--- a/event_rewards/php/bootstrap_user_upgrade.php
+++ b/event_rewards/php/bootstrap_user_upgrade.php
@@ -30,7 +30,7 @@ if ($fileDir === false)
 
 require ($fileDir . '/src/XF.php');
 
-XF::start($dir);
+XF::start($fileDir); //after upgrading to xenforo 2.3 is the global dir variable removed.
 $app = XF::setupApp('XF\Pub\App');
 
 // Get Upgrade Repository