diff --git a/apps/notification/tasks.py b/apps/notification/tasks.py
index 9bbf1ca8..5ec33920 100644
--- a/apps/notification/tasks.py
+++ b/apps/notification/tasks.py
@@ -43,7 +43,10 @@ def send_certificates(email=None, date=None, dry_run=False):
     for user_id in users:
         if user_id in notified_users:
             continue
-        un = user_notifications.get(user_id, UserNotification(user_id=user_id))
+        if not user_id in user_notifications:
+            un = UserNotification.objects.create(user_id=user_id)
+        else:
+            un = user_notifications.get(user_id)
         print(un.user.email)
         if dry_run:
             continue