diff --git a/ansible/roles/heat/templates/heat.conf.j2 b/ansible/roles/heat/templates/heat.conf.j2
index 09a85eb763..1b4b6cd145 100644
--- a/ansible/roles/heat/templates/heat.conf.j2
+++ b/ansible/roles/heat/templates/heat.conf.j2
@@ -14,7 +14,6 @@ stack_domain_admin_password = {{ heat_domain_admin_password }}
 stack_user_domain_name = heat_user_domain
 
 deferred_auth_method = trusts
-trusts_delegated_roles = heat_stack_owner
 
 {% if service_name == 'heat-engine' %}
 num_engine_workers = {{ openstack_service_workers }}