diff --git a/inventory/sample/group_vars/k8s-cluster/k8s-cluster.yml b/inventory/sample/group_vars/k8s-cluster/k8s-cluster.yml
index 12153c797..b8dced281 100644
--- a/inventory/sample/group_vars/k8s-cluster/k8s-cluster.yml
+++ b/inventory/sample/group_vars/k8s-cluster/k8s-cluster.yml
@@ -59,7 +59,7 @@ kube_users:
 # kube_oidc_url: https:// ...
 # kube_oidc_client_id: kubernetes
 ## Optional settings for OIDC
-# kube_oidc_ca_file: {{ kube_cert_dir }}/ca.pem
+# kube_oidc_ca_file: "{{ kube_cert_dir }}/ca.pem"
 # kube_oidc_username_claim: sub
 # kube_oidc_username_prefix: oidc:
 # kube_oidc_groups_claim: groups