diff --git a/app/call_forward/resources/classes/call_forward.php b/app/call_forward/resources/classes/call_forward.php
index 0017b05ac3..14abd65449 100644
--- a/app/call_forward/resources/classes/call_forward.php
+++ b/app/call_forward/resources/classes/call_forward.php
@@ -248,7 +248,6 @@
 
 					//synchronize configuration
 					if (!empty($_SESSION['switch']['extensions']['dir']) && is_readable($_SESSION['switch']['extensions']['dir'])) {
-						require_once "app/extensions/resources/classes/extension.php";
 						$ext = new extension;
 						$ext->xml();
 						unset($ext);