diff --git a/manifests/site.pp b/manifests/site.pp
index 160045be1f..4e91d21659 100644
--- a/manifests/site.pp
+++ b/manifests/site.pp
@@ -151,6 +151,7 @@ node 'cacti.openstack.org' {
 }
 
 # Node-OS: trusty
+# Node-OS: xenial
 node /^cacti\d+\.openstack\.org$/ {
   $group = "cacti"
   include openstack_project::ssl_cert_check