diff --git a/epdb/logic.py b/epdb/logic.py
index 62d4f585..6fa01c67 100644
--- a/epdb/logic.py
+++ b/epdb/logic.py
@@ -62,7 +62,7 @@ class UserManager(object):
 
     @staticmethod
     def get_user_by_id(user, user_uuid: str):
-        if user.uuid != user_uuid and not user.is_superuser:
+        if str(user.uuid) != user_uuid and not user.is_superuser:
             raise ValueError("Getting user failed!")
         return get_user_model().objects.get(uuid=user_uuid)