diff --git a/grade/report/overview/lib.php b/grade/report/overview/lib.php
index 90ca93def3e..c4efb454367 100644
--- a/grade/report/overview/lib.php
+++ b/grade/report/overview/lib.php
@@ -249,7 +249,7 @@ function grade_report_overview_settings_definition(&$mform) {
                       0 => get_string('hide'),
                       1 => get_string('show'));
 
-    if (empty($CFG->grade_overviewreport_showrank)) {
+    if (empty($CFG->grade_report_overview_showrank)) {
         $options[-1] = get_string('defaultprev', 'grades', $options[0]);
     } else {
         $options[-1] = get_string('defaultprev', 'grades', $options[1]);
diff --git a/grade/report/overview/settings.php b/grade/report/overview/settings.php
index c1e43d8c622..27bbd7add14 100644
--- a/grade/report/overview/settings.php
+++ b/grade/report/overview/settings.php
@@ -26,7 +26,8 @@ defined('MOODLE_INTERNAL') || die;
 
 if ($ADMIN->fulltree) {
 
-    $settings->add(new admin_setting_configcheckbox('grade_report_overview_showrank', get_string('showrank', 'grades'), get_string('showrank_help', 'grades'), 0, PARAM_INT));
+    $settings->add(new admin_setting_configcheckbox('grade_report_overview_showrank', get_string('showrank', 'grades'),
+                   get_string('showrank_help', 'grades'), 0));
 
     $settings->add(new admin_setting_configselect('grade_report_overview_showtotalsifcontainhidden', get_string('hidetotalifhiddenitems', 'grades'),
                                                       get_string('hidetotalifhiddenitems_help', 'grades'), GRADE_REPORT_HIDE_TOTAL_IF_CONTAINS_HIDDEN,