diff --git a/salt/minion/cert/vnc/novncproxy_server.yml b/salt/minion/cert/vnc/novncproxy_server.yml
index 9c3dd96..a9f0062 100644
--- a/salt/minion/cert/vnc/novncproxy_server.yml
+++ b/salt/minion/cert/vnc/novncproxy_server.yml
@@ -20,6 +20,7 @@
             DNS:${linux:system:name},
             DNS:${_param:cluster_vip_address},
             DNS:${linux:network:fqdn}
+            DNS:${_param:openstack_service_host}
           key_usage: "digitalSignature,nonRepudiation,keyEncipherment"
           key_file: ${_param:novncproxy_server_ssl_key_file}
           cert_file: ${_param:novncproxy_server_ssl_cert_file}