diff --git a/src/kili/entrypoints/mutations/notification/__init__.py b/src/kili/entrypoints/mutations/notification/__init__.py
index 001e76ae5..3c71d6bd7 100644
--- a/src/kili/entrypoints/mutations/notification/__init__.py
+++ b/src/kili/entrypoints/mutations/notification/__init__.py
@@ -48,9 +48,9 @@ def create_notification(self, message: str, status: str, url: str, user_id: str)
     def update_properties_in_notification(
         self,
         notification_id: str,
-        has_been_seen: bool,
         status: str,
         url: str,
+        has_been_seen: Optional[bool] = None,
         progress: Optional[int] = None,
         task_id: Optional[str] = None,
     ):