diff --git a/LetoDMS_Core/Core.php b/LetoDMS_Core/Core.php
index 63571e7cf..8968926e3 100644
--- a/LetoDMS_Core/Core.php
+++ b/LetoDMS_Core/Core.php
@@ -15,7 +15,7 @@
 /**
  * @uses LetoDMS_DatabaseAccess
  */
-define('USE_PDO', 1);
+//define('USE_PDO', 1);
 if(defined('USE_PDO'))
 	require_once('Core/inc.DBAccessPDO.php');
 else