diff --git a/Services/FileServices/classes/class.ilFileServicesSettings.php b/Services/FileServices/classes/class.ilFileServicesSettings.php
index 9090e4511d7f..cd3fe7f4b505 100644
--- a/Services/FileServices/classes/class.ilFileServicesSettings.php
+++ b/Services/FileServices/classes/class.ilFileServicesSettings.php
@@ -62,6 +62,7 @@ private function determineByPass(): bool
     {
         global $DIC;
         return $DIC->isDependencyAvailable('rbac')
+            && isset($DIC["rbacsystem"])
             && $DIC->rbac()->system()->checkAccess(
                 'upload_blacklisted_files',
                 $this->file_admin_ref_id