diff --git a/src/pretix/api/views/order.py b/src/pretix/api/views/order.py
index ce517f9805..62a4f25e46 100644
--- a/src/pretix/api/views/order.py
+++ b/src/pretix/api/views/order.py
@@ -4,7 +4,7 @@ from decimal import Decimal
 import django_filters
 import pytz
 from django.db import transaction
-from django.db.models import Exists, F, OuterRef, Prefetch, Q, Max
+from django.db.models import Exists, F, Max, OuterRef, Prefetch, Q
 from django.db.models.functions import Coalesce, Concat, Greatest
 from django.http import FileResponse, HttpResponse
 from django.shortcuts import get_object_or_404