diff --git a/templates/designate.conf.j2 b/templates/designate.conf.j2
index 20cea70..00b8191 100644
--- a/templates/designate.conf.j2
+++ b/templates/designate.conf.j2
@@ -33,7 +33,7 @@ rabbit_notification_exchange = designate
 rabbit_notification_topic = notifications
 
 [oslo_messaging_notifications]
-driver = {% if designate_ceilometer_enabled %}messagingv2{% else %}noop{% endif %}
+driver = {{ (designate_ceilometer_enabled | bool) | ternary('messagingv2', 'noop') }}
 transport_url = {{ designate_oslomsg_notify_transport }}://{% for host in designate_oslomsg_notify_servers.split(',') %}{{ designate_oslomsg_notify_userid }}:{{ designate_oslomsg_notify_password }}@{{ host }}:{{ designate_oslomsg_notify_port }}{% if not loop.last %},{% else %}/{{ designate_oslomsg_notify_vhost }}{% if designate_oslomsg_notify_use_ssl | bool %}?ssl=1{% else %}?ssl=0{% endif %}{% endif %}{% endfor %}
 
 ########################