diff --git a/apps/push_notifications/views.py b/apps/push_notifications/views.py
index c29063a..0d42008 100644
--- a/apps/push_notifications/views.py
+++ b/apps/push_notifications/views.py
@@ -62,8 +62,8 @@ class ApplicationPushUserViewSet(
 
     def perform_create(self, serializer):
         user_uuid = self.kwargs.get('user_uuid')
-        user, _ = User.objects.get_or_create(uuid=user_uuid)
-        push_user = PushUser.objects.submit(user)
+        user = get_object_or_404(User, uuid=user_uuid)
+        push_user = get_object_or_404(PushUser, user=user)
         application = get_application(self.request)
         instance = serializer.save(push_user=push_user, application=application)
         instance.send_push()