diff --git a/main/inc/lib/grade_model.lib.php b/main/inc/lib/grade_model.lib.php
index 6167ff570f..5b540bb104 100644
--- a/main/inc/lib/grade_model.lib.php
+++ b/main/inc/lib/grade_model.lib.php
@@ -12,6 +12,9 @@
 /**
  * @package chamilo.library
  */
+
+require_once 'fckeditor/fckeditor.php';
+
 class GradeModel extends Model {
     
     var $table;