diff --git a/op/op.ChangePassword.php b/op/op.ChangePassword.php
index f2c9aa5ca..da4c6f32c 100644
--- a/op/op.ChangePassword.php
+++ b/op/op.ChangePassword.php
@@ -27,6 +27,7 @@ include("../inc/inc.Extension.php");
 include("../inc/inc.ClassSession.php");
 include("../inc/inc.DBInit.php");
 include("../inc/inc.ClassUI.php");
+require_once("../inc/inc.ClassAccessOperation.php");
 
 function _printMessage($heading, $message) {