diff --git a/vtlib/Vtiger/Net/Client.php b/vtlib/Vtiger/Net/Client.php
index 97608bc3d952ef8b0b437ddd6623942cf406090c..b6d276d1c1dd9833f25bf3a680e1187231e44d8b 100644
--- a/vtlib/Vtiger/Net/Client.php
+++ b/vtlib/Vtiger/Net/Client.php
@@ -7,7 +7,7 @@
  * Portions created by vtiger are Copyright (C) vtiger.
  * All Rights Reserved.
  *************************************************************************************/
-include 'vtlib/thirdparty/network/Request.php';
+include_once 'vtlib/thirdparty/network/Request.php';
 
 /**
  * Provides API to work with HTTP Connection.