diff --git a/course/category.php b/course/category.php
index f88d867082b..7748f60374a 100644
--- a/course/category.php
+++ b/course/category.php
@@ -27,6 +27,7 @@
 
 require_once("../config.php");
 require_once($CFG->dirroot.'/course/lib.php');
+require_once($CFG->libdir.'/textlib.class.php');
 
 $id = required_param('id', PARAM_INT); // Category id
 $page = optional_param('page', 0, PARAM_INT); // which page to show
@@ -75,7 +76,8 @@ $sesskeyprovided = !empty($sesskey) && confirm_sesskey($sesskey);
 // Process any category actions.
 if ($canmanage && $resort && $sesskeyprovided) {
     // Resort the category if requested
-    if ($courses = get_courses($category->id, "fullname ASC", 'c.id,c.fullname,c.sortorder')) {
+    if ($courses = get_courses($category->id, 'c.id,c.fullname,c.sortorder')) {
+        collatorlib::asort_objects_by_property($courses, 'fullname', collatorlib::SORT_NATURAL);
         $i = 1;
         foreach ($courses as $course) {
             $DB->set_field('course', 'sortorder', $category->sortorder+$i, array('id'=>$course->id));