diff --git a/mod/choice/mod_form.php b/mod/choice/mod_form.php
index <HASH>..<HASH> 100644
--- a/mod/choice/mod_form.php
+++ b/mod/choice/mod_form.php
@@ -95,6 +95,7 @@ class mod_choice_mod_form extends moodleform_mod {
         $features->groups = true;
         $features->groupings = true;
         $features->groupmembersonly = true;
+        $features->gradecat = false;
         $this->standard_coursemodule_elements($features);
 //-------------------------------------------------------------------------------
         $this->add_action_buttons();
MDL-<I> - hide grade category drop down.