diff --git a/grade/grading/form/guide/lib.php b/grade/grading/form/guide/lib.php
index f878c5e66a9..371a5ff2d22 100644
--- a/grade/grading/form/guide/lib.php
+++ b/grade/grading/form/guide/lib.php
@@ -657,8 +657,9 @@ class gradingform_guide_controller extends gradingform_controller {
         }
         $returnvalue['maxscore'] = $maxscore;
         $returnvalue['minscore'] = 0;
-        if (!empty($this->moduleinstance->grade)) {
-            $graderange = make_grades_menu($this->moduleinstance->grade);
+        $fieldname = \core_grades\component_gradeitems::get_field_name_for_itemname($this->component, $this->area, 'grade');
+        if (!empty($this->moduleinstance->{$fieldname})) {
+            $graderange = make_grades_menu($this->moduleinstance->{$fieldname});
             $returnvalue['modulegrade'] = count($graderange) - 1;
         }
         return $returnvalue;