diff --git a/templates/kubeadm-config.yaml.j2 b/templates/kubeadm-config.yaml.j2
index 310987c..6071d91 100644
--- a/templates/kubeadm-config.yaml.j2
+++ b/templates/kubeadm-config.yaml.j2
@@ -66,10 +66,9 @@ apiVersion: kubeadm.k8s.io/v1beta1
 kind: ClusterConfiguration
 kubernetesVersion: stable
 controlPlaneEndpoint: "{{ lb_kubemaster }}:6443"
+{% if is defined %}
 apiServer:
   certSANs:
-  - "{{ lb_kubemaster }}"
-{% if false %}
   - "{{ lbip_kubeapiserver }}"
 {% endif %}
 networking: