diff --git a/src/pages/AdminPanel/PermissionController.jsx b/src/pages/AdminPanel/PermissionController.jsx
index 50fe296..c232fe0 100755
--- a/src/pages/AdminPanel/PermissionController.jsx
+++ b/src/pages/AdminPanel/PermissionController.jsx
@@ -28,7 +28,9 @@ const PermissionController = memo(() => {
     const filteredPermissions = useMemo(() => permissions.filter((permission) => permission && (!searchValue || [
             permission.name ?? '',
             permission.description ?? '',
-        ].join(' ').includes(searchValue.toLowerCase()))
+        ].join(' ')
+        .toLowerCase()
+        .includes(searchValue.toLowerCase()))
     ), [permissions, searchValue])
 
     const updateTable = useCallback(async () => invokeWebApiWrapperAsync(