diff --git a/phpwf/plugins/class.acl.php b/phpwf/plugins/class.acl.php
index bcaa7040..df419fe4 100644
--- a/phpwf/plugins/class.acl.php
+++ b/phpwf/plugins/class.acl.php
@@ -1304,7 +1304,7 @@ Allow from all
         }
     }
 
-    if (!isset($_SERVER['OPENXE_HTACCESS'])) {
+    if (!isset($_SERVER['HTTP_OPENXE_HTACCESS'])) {
         return("htaccess nicht aktiv.");
     }