diff --git a/src/pretix/presale/checkoutflow.py b/src/pretix/presale/checkoutflow.py
index 87d9baab52..ec1039e194 100644
--- a/src/pretix/presale/checkoutflow.py
+++ b/src/pretix/presale/checkoutflow.py
@@ -674,7 +674,7 @@ class AddOnsStep(CartMixin, AsyncAction, TemplateFlowStep):
             self.request.event,
             subevent=subevent,
             voucher=None,
-            channel=self.request.sales_channel.identifier,
+            channel=self.request.sales_channel,
             base_qs=items_qs,
             allow_addons=True,
             allow_cross_sell=True,