diff --git a/transformation_overview.php b/transformation_overview.php
index 44386ac50..d6b5989d2 100644
--- a/transformation_overview.php
+++ b/transformation_overview.php
@@ -15,7 +15,6 @@ define('PMA_DISPLAY_HEADING', 0);
  */
 require_once './libraries/common.inc.php';
 require_once './libraries/header.inc.php';
-require_once './libraries/relation.lib.php';
 require_once './libraries/transformations.lib.php';
 
 $types = PMA_getAvailableMIMEtypes();