diff --git a/Security/Authorization/AuthorizationHelper.php b/Security/Authorization/AuthorizationHelper.php
index f786e38f3..ed2dd499d 100644
--- a/Security/Authorization/AuthorizationHelper.php
+++ b/Security/Authorization/AuthorizationHelper.php
@@ -296,7 +296,7 @@ class AuthorizationHelper
                 );
         
         foreach ($roles as $r) {
-            $childRoles = $this->roleHierarchy->getReachableRoles([$r]);
+            $childRoles = $this->roleHierarchy->getReachableRoleNames([$r->getRole()]);
             
             if (\in_array($role, $childRoles)) {
                 $parentRoles[] = $r;