diff --git a/mod/assignment/lib.php b/mod/assignment/lib.php
index 344fcfb15c0..cb694918033 100644
--- a/mod/assignment/lib.php
+++ b/mod/assignment/lib.php
@@ -5,8 +5,6 @@
  * This class provides all the functionality for an assignment
  */
 
-require_once($CFG->libdir.'/gradelib.php');
-
 DEFINE ('ASSIGNMENT_COUNT_WORDS', 1);
 DEFINE ('ASSIGNMENT_COUNT_LETTERS', 2);
 
diff --git a/mod/data/lib.php b/mod/data/lib.php
index a5c92e9cf43..c21de43d1ee 100755
--- a/mod/data/lib.php
+++ b/mod/data/lib.php
@@ -22,8 +22,6 @@
 //                                                                       //
 ///////////////////////////////////////////////////////////////////////////
 
-require_once($CFG->libdir.'/gradelib.php');
-
 /// Some constants
 define ('DATA_MAX_ENTRIES', 50);
 define ('DATA_PERPAGE_SINGLE', 1);
diff --git a/mod/forum/lib.php b/mod/forum/lib.php
index fece8039b91..743303f39e9 100644
--- a/mod/forum/lib.php
+++ b/mod/forum/lib.php
@@ -1,7 +1,6 @@
 <?php  // $Id$
 
 require_once($CFG->libdir.'/filelib.php');
-require_once($CFG->libdir.'/gradelib.php');
 
 /// CONSTANTS ///////////////////////////////////////////////////////////
 
diff --git a/mod/glossary/lib.php b/mod/glossary/lib.php
index 7147c130af7..58380b026ad 100644
--- a/mod/glossary/lib.php
+++ b/mod/glossary/lib.php
@@ -4,7 +4,6 @@
 /// (replace glossary with the name of your module and delete this line)
 
 require_once($CFG->libdir.'/filelib.php');
-require_once($CFG->libdir.'/gradelib.php');
 
 define("GLOSSARY_SHOW_ALL_CATEGORIES", 0);
 define("GLOSSARY_SHOW_NOT_CATEGORISED", -1);