diff --git a/src/pretix/control/views/event.py b/src/pretix/control/views/event.py
index 0759e1307..94fbddd9f 100644
--- a/src/pretix/control/views/event.py
+++ b/src/pretix/control/views/event.py
@@ -296,7 +296,7 @@ class DisplaySettings(EventSettingsFormView):
                         for k in form.changed_data
                     }
                 )
-            regenerate_css(self.request.event.pk)
+            regenerate_css.apply_async(args=(self.request.event.pk,))
             messages.success(self.request, _('Your changes have been saved. Please note that it can '
                                              'take a short period of time until your changes become '
                                              'active.'))
diff --git a/src/pretix/presale/management/commands/updatestyles.py b/src/pretix/presale/management/commands/updatestyles.py
index 81c3edff0..9f801347d 100644
--- a/src/pretix/presale/management/commands/updatestyles.py
+++ b/src/pretix/presale/management/commands/updatestyles.py
@@ -10,4 +10,4 @@ class Command(BaseCommand):
 
     def handle(self, *args, **options):
         for es in EventSetting.objects.filter(key="presale_css_file"):
-            regenerate_css(es.object_id)
+            regenerate_css.apply_async(args=(es.object_id,))