diff --git a/gas/views.py b/gas/views.py
index e25c083..4dfa0aa 100644
--- a/gas/views.py
+++ b/gas/views.py
@@ -74,6 +74,7 @@ class GASMixin:
     base_role = 'admins'
     roles = set()
     base_template = 'gas/base.html'
+    cancel_url = None
     continue_url = None
     header_title = ''
     title = ''