diff --git a/ansible/roles/heat/templates/heat.conf.j2 b/ansible/roles/heat/templates/heat.conf.j2
index 8cd48a874f..84e3a548c7 100644
--- a/ansible/roles/heat/templates/heat.conf.j2
+++ b/ansible/roles/heat/templates/heat.conf.j2
@@ -9,7 +9,7 @@ heat_waitcondition_server_url = {{ public_protocol }}://{{ kolla_external_fqdn }
 
 stack_domain_admin = heat_domain_admin
 stack_domain_admin_password = {{ heat_domain_admin_password }}
-stack_user_domain_name = heat
+stack_user_domain_name = heat_user_domain
 
 rpc_backend = rabbit
 deferred_auth_method = trusts