diff --git a/classes/cluster/k8s-ha-contrail-40/init.yml b/classes/cluster/k8s-ha-contrail-40/init.yml
index e70398c..f0ad1aa 100644
--- a/classes/cluster/k8s-ha-contrail-40/init.yml
+++ b/classes/cluster/k8s-ha-contrail-40/init.yml
@@ -1,3 +1,5 @@
+classes:
+- system.defaults
 parameters:
   _param:
     cluster_name: k8s-ha-contrail-40