diff --git a/test/libraries/common/PMA_showPHPDocu_test.php b/test/libraries/common/PMA_showPHPDocu_test.php
index 2bf53d0a50..15f8b11c69 100644
--- a/test/libraries/common/PMA_showPHPDocu_test.php
+++ b/test/libraries/common/PMA_showPHPDocu_test.php
@@ -11,6 +11,7 @@
 /*
  * Include to test.
  */
+require_once 'libraries/config.default.php';
 require_once 'libraries/core.lib.php';
 require_once 'libraries/common.lib.php';
 require_once 'libraries/Theme.class.php';