diff --git a/src/pretix/api/views/checkin.py b/src/pretix/api/views/checkin.py
index f8f6982ce2..f56f44b5d6 100644
--- a/src/pretix/api/views/checkin.py
+++ b/src/pretix/api/views/checkin.py
@@ -69,7 +69,8 @@ from pretix.base.models import (
 from pretix.base.models.orders import PrintLog
 from pretix.base.permissions import AnyPermissionOf
 from pretix.base.services.checkin import (
-    CheckInError, RequiredQuestionsError, SQLLogic, perform_checkin, RequiredMediaExchangeError,
+    CheckInError, RequiredMediaExchangeError, RequiredQuestionsError, SQLLogic,
+    perform_checkin,
 )
 from pretix.base.signals import checkin_annulled
 from pretix.helpers import OF_SELF
diff --git a/src/pretix/control/views/checkin.py b/src/pretix/control/views/checkin.py
index d9ff2ce744..00837a903c 100644
--- a/src/pretix/control/views/checkin.py
+++ b/src/pretix/control/views/checkin.py
@@ -50,7 +50,7 @@ from i18nfield.strings import LazyI18nString
 
 from pretix.api.views.checkin import _redeem_process
 from pretix.base.media import MEDIA_TYPES
-from pretix.base.models import Checkin, LogEntry, Order, OrderPosition, Item
+from pretix.base.models import Checkin, Item, LogEntry, Order, OrderPosition
 from pretix.base.models.checkin import CheckinList
 from pretix.base.models.orders import PrintLog
 from pretix.base.permissions import AnyPermissionOf