diff --git a/core/tickets/api_v2.py b/core/tickets/api_v2.py
index c895732..6b2e12e 100644
--- a/core/tickets/api_v2.py
+++ b/core/tickets/api_v2.py
@@ -166,6 +166,8 @@ router.register(r'tickets', IssueViewSet, basename='issues')
 router.register(r'matches', RelationViewSet, basename='matches')
 router.register(r'shipping_vouchers', ShippingVoucherViewSet, basename='shipping_vouchers')
 
+
+# [-A-Za-z0-9+/]*={0,3}
 urlpatterns = ([
                    re_path(r'tickets/states/$', get_available_states, name='get_available_states'),
                    re_path(r'^tickets/(?P<pk>\d+)/reply/$', reply, name='reply'),