diff --git a/course/yui/toolboxes/toolboxes.js b/course/yui/toolboxes/toolboxes.js
index 29711981e9b..8f18f7df9a7 100644
--- a/course/yui/toolboxes/toolboxes.js
+++ b/course/yui/toolboxes/toolboxes.js
@@ -873,6 +873,6 @@ YUI.add('moodle-course-toolboxes', function(Y) {
 
 },
 '@VERSION@', {
-    requires : ['base', 'node', 'io', 'moodle-course-coursebase']
+    requires : ['base', 'node', 'io', 'moodle-course-coursebase', 'moodle-course-util']
 }
 );