diff --git a/grade/report/grader/preferences_form.php b/grade/report/grader/preferences_form.php
index 1a9709847f7..f548eaf9812 100644
--- a/grade/report/grader/preferences_form.php
+++ b/grade/report/grader/preferences_form.php
@@ -119,6 +119,7 @@ class grader_report_preferences_form extends moodleform {
 
         foreach ($preferences as $group => $prefs) {
             $mform->addElement('header', $group, get_string($group, 'grades'));
+            $mform->setExpanded($group);
 
             foreach ($prefs as $pref => $type) {
                 // Detect and process dynamically numbered preferences