diff --git a/classes/cluster/virtual-mcp-mitaka-ovs-trusty/init.yml b/classes/cluster/virtual-mcp-mitaka-ovs-trusty/init.yml
index 4312c7d..f2d6c97 100644
--- a/classes/cluster/virtual-mcp-mitaka-ovs-trusty/init.yml
+++ b/classes/cluster/virtual-mcp-mitaka-ovs-trusty/init.yml
@@ -1,4 +1,5 @@
 classes:
+- system.defaults
 - system.linux.network.dynamic_hosts
 - service.grafana.collector
 - system.fluentd