diff --git a/puppet/services/nova-base.yaml b/puppet/services/nova-base.yaml
index 0cb7139e14..adb97e5952 100644
--- a/puppet/services/nova-base.yaml
+++ b/puppet/services/nova-base.yaml
@@ -229,6 +229,7 @@ outputs:
           nova::host: '%{::fqdn}'
           nova::notify_on_state_change: 'vm_and_task_state'
           nova::notification_driver: {get_param: NotificationDriver}
+          nova::notification_format: 'unversioned'
           nova::network::neutron::neutron_auth_type: 'v3password'
           nova::db::database_db_max_retries: -1
           nova::db::database_max_retries: -1