diff --git a/include/upgrader/done.inc.php b/include/upgrader/done.inc.php
index ddd5cab75e09b7d5c654b41284860038d5d6387b..f4a55538991d4b8fd6f6814bcb7f08c31e390b7f 100644
--- a/include/upgrader/done.inc.php
+++ b/include/upgrader/done.inc.php
@@ -1,5 +1,7 @@
 <?php
 if(!defined('OSTSCPINC') || !$thisstaff || !$thisstaff->isAdmin()) die('Access Denied');
+//Destroy the upgrader - we're done! 
+$_SESSION['ost_upgrader']=null;
 ?> 
 <div id="upgrader">
     <div id="main">