diff --git a/mandaye/auth/authform.py b/mandaye/auth/authform.py
index 5f615a7..98df943 100644
--- a/mandaye/auth/authform.py
+++ b/mandaye/auth/authform.py
@@ -414,6 +414,8 @@ a password_field key if you want to encode a password.")
         qs = parse_qs(env['QUERY_STRING'])
         if values.get('next_url'):
             next_url = values.get('next_url')
+        elif self.urls.has_key('disassociate_next_url'):
+            next_url = self.urls['disassociate_next_url']
         else:
             next_url = '/'
         if qs.has_key('next_url'):