diff --git a/src/pretix/api/views/checkin.py b/src/pretix/api/views/checkin.py
index 7fb054e24..d907e93ac 100644
--- a/src/pretix/api/views/checkin.py
+++ b/src/pretix/api/views/checkin.py
@@ -1121,7 +1121,7 @@ class CheckinViewSet(viewsets.ReadOnlyModelViewSet):
     permission = 'can_view_orders'
 
     def get_queryset(self):
-        qs = Checkin.all.filter().select_related(
+        qs = Checkin.all.filter(list__event=self.request.event).select_related(
             "position",
             "device",
         )