diff --git a/magnum/drivers/k8s_fedora_atomic_v1/templates/kubecluster.yaml b/magnum/drivers/k8s_fedora_atomic_v1/templates/kubecluster.yaml
index 3b153812a2..4082c1a305 100644
--- a/magnum/drivers/k8s_fedora_atomic_v1/templates/kubecluster.yaml
+++ b/magnum/drivers/k8s_fedora_atomic_v1/templates/kubecluster.yaml
@@ -566,6 +566,7 @@ parameters:
   keystone_auth_default_policy:
     type: string
     description: Json read from /etc/magnum/keystone_auth_default_policy.json
+    default: ""
 
   k8s_keystone_auth_tag:
     type: string