diff --git a/lib/modules/GradebookModule.class.php b/lib/modules/GradebookModule.class.php
index 0423622a99a99005fa9f18fc2c43f294504630b3..66886a243d5b17ec7219cd57cdf07e2af55c8d9c 100644
--- a/lib/modules/GradebookModule.class.php
+++ b/lib/modules/GradebookModule.class.php
@@ -112,7 +112,7 @@ class GradebookModule extends CorePlugin implements SystemPlugin, StudipModule
             'custom_definitions',
             new Navigation(_('Noten manuell erfassen'), 'dispatch.php/course/gradebook/lecturers/custom_definitions')
         );
-        if (Config::get()->ILIAS_INTERFACE_ENABLE && $cid && Course::findCurrent()->isToolActive('IliasInterfaceModule')) {
+        if (Config::get()->ILIAS_INTERFACE_ENABLE && Course::find($cid)->isToolActive('IliasInterfaceModule')) {
             $navigation->addSubNavigation(
                 'edit_ilias_definitions',
                 new Navigation(_('ILIAS-Test als Leistung definieren'), 'dispatch.php/course/gradebook/lecturers/edit_ilias_definitions')