diff --git a/lib/simpletest/testfilelib.php b/lib/simpletest/testfilelib.php
index 70166d1fb1a..d28bb2cad06 100644
--- a/lib/simpletest/testfilelib.php
+++ b/lib/simpletest/testfilelib.php
@@ -31,7 +31,7 @@ require_once($CFG->libdir.'/filelib.php');
 require_once($CFG->libdir.'/file/file_browser.php');
 require_once($CFG->libdir.'/file/file_info_course.php');
 
-require_once($CFG->dirroot.'/user/lib.php');
+//require_once($CFG->dirroot.'/user/lib.php');
 require_once($CFG->dirroot.'/mod/forum/lib.php');
 
 /**