diff --git a/ansible/roles/nova/templates/nova.conf.j2 b/ansible/roles/nova/templates/nova.conf.j2
index d94c8ace37..46ffb6eff1 100644
--- a/ansible/roles/nova/templates/nova.conf.j2
+++ b/ansible/roles/nova/templates/nova.conf.j2
@@ -265,7 +265,7 @@ password = {{ placement_keystone_password }}
 user_domain_name = {{ default_user_domain_name }}
 project_name = service
 project_domain_name = {{ default_project_domain_name }}
-os_region_name = {{ openstack_region_name }}
+region_name = {{ openstack_region_name }}
 os_interface = internal
 
 [notifications]