diff --git a/lib/plugins/auth.php b/lib/plugins/auth.php
index b38b591a356b74c9e77847547752a89fc8c55f02..02e0613dd879b066a0f1e0e12e05de0a8e633289 100644
--- a/lib/plugins/auth.php
+++ b/lib/plugins/auth.php
@@ -129,7 +129,7 @@ class DokuWiki_Auth_Plugin extends DokuWiki_Plugin {
         $eventdata = array('type' => $type, 'params' => $params, 'modification_result' => null);
         $evt       = new Doku_Event('AUTH_USER_CHANGE', $eventdata);
         if($evt->advise_before(true)) {
-            $result                           = call_user_func_array(array($this, $validTypes[$type]), $params);
+            $result                           = call_user_func_array(array($this, $validTypes[$type]), $evt->data['params']);
             $evt->data['modification_result'] = $result;
         }
         $evt->advise_after();