diff --git a/src/pretix/presale/urls.py b/src/pretix/presale/urls.py
index 1b707072c..732871925 100644
--- a/src/pretix/presale/urls.py
+++ b/src/pretix/presale/urls.py
@@ -57,7 +57,7 @@ event_patterns = [
     url(r'^order/(?P<order>[^/]+)/(?P<secret>[A-Za-z0-9]+)/invoice/(?P<invoice>[0-9]+)$',
         pretix.presale.views.order.InvoiceDownload.as_view(),
         name='event.invoice.download'),
-    url(r'^ical$',
+    url(r'^ical/?$',
         pretix.presale.views.event.EventIcalDownload.as_view(),
         name='event.ical.download'),
     url(r'^auth/$', pretix.presale.views.event.EventAuth.as_view(), name='event.auth'),