diff --git a/resolvers/load.py b/resolvers/load.py
index b0a2b97..65f3b1d 100644
--- a/resolvers/load.py
+++ b/resolvers/load.py
@@ -54,7 +54,7 @@ async def get_notifications_grouped(author_id: int, after: int = 0, limit: int =
     )
     if after:
         query = query.filter(Notification.created_at > after)
-    query = query.group_by(NotificationSeen.notification)
+    query = query.group_by(NotificationSeen.notification, Notification.created_at)
 
     groups_amount = 0
     unread = 0