diff --git a/src/pretix/plugins/ticketoutputpdf/exporters.py b/src/pretix/plugins/ticketoutputpdf/exporters.py
index 5663ee3ad..4d42e866b 100644
--- a/src/pretix/plugins/ticketoutputpdf/exporters.py
+++ b/src/pretix/plugins/ticketoutputpdf/exporters.py
@@ -223,7 +223,7 @@ class AllTicketsPDF(BaseExporter):
 
                 with language(op.order.locale, o.event.settings.region):
                     layout = o.layout_map.get(
-                        (op.item_id, op.order.sales_channel_id),
+                        (op.item_id, op.order.sales_channel.identifier),
                         o.layout_map.get(
                             (op.item_id, 'web'),
                             o.default_layout