diff --git a/src/routes/api/admin/dienststellen/+server.ts b/src/routes/api/admin/dienststellen/+server.ts
index a41abae..c882558 100644
--- a/src/routes/api/admin/dienststellen/+server.ts
+++ b/src/routes/api/admin/dienststellen/+server.ts
@@ -4,7 +4,9 @@ import type { RequestHandler } from './$types';
 
 const prisma = new PrismaClient();
 
-function checkAuth(cookies: unknown) {
+import type { Cookies } from '@sveltejs/kit';
+
+function checkAuth(cookies: Cookies) {
   return cookies.get('admin_session') === 'true';
 }