diff --git a/face_recognition/app/app.py b/face_recognition/app/app.py
index 88e3342..539c186 100644
--- a/face_recognition/app/app.py
+++ b/face_recognition/app/app.py
@@ -25,6 +25,7 @@ def new_user_id():
         if check_id(id) == False:
             break
     demo_object = ['test']
+    demo_object = pickle.dumps(demo_object)
     minioClient.put_object('users', str(id), demo_object, os.stat('demo_object').st_size)
 #funktionalität implementieres s3 Platzhalterdatei anlegen für user,
     return(id)