diff --git a/mod/scorm/db/upgrade.php b/mod/scorm/db/upgrade.php
index ca0fb758179..f2171b85fb2 100644
--- a/mod/scorm/db/upgrade.php
+++ b/mod/scorm/db/upgrade.php
@@ -130,6 +130,7 @@ function xmldb_scorm_upgrade($oldversion) {
     }
 
     if ($oldversion < 2013090100) {
+        global $CFG;
         $table = new xmldb_table('scorm');
 
         $field = new xmldb_field('nav', XMLDB_TYPE_INTEGER, '1', XMLDB_UNSIGNED, true, null, 1, 'hidetoc');
@@ -160,15 +161,16 @@ function xmldb_scorm_upgrade($oldversion) {
             $dbman->drop_field($table, $field);
         }
 
-        $hide = get_config('hidenav', 'scorm');
-        unset_config('hidenav', 'mod_scorm');
+        $hide = get_config('scorm', 'hidenav');
+        unset_config('hidenav', 'scorm');
         if (!empty($hide)) {
-            set_config('nav', SCORM_NAV_DISABLED, 'mod_scorm');
+            require_once($CFG->dirroot . '/mod/scorm/lib.php');
+            set_config('nav', SCORM_NAV_DISABLED, 'scorm');
         }
 
-        $hideadv = get_config('hidenav_adv', 'scorm');
-        unset_config('hidenav_adv', 'mod_scorm');
-        set_config('nav_adv', $hideadv, 'mod_scorm');
+        $hideadv = get_config('scorm', 'hidenav_adv');
+        unset_config('hidenav_adv', 'scorm');
+        set_config('nav_adv', $hideadv, 'scorm');
 
         upgrade_mod_savepoint(true, 2013090100, 'scorm');
     }