diff --git a/content/en/docs/reference/access-authn-authz/rbac.md b/content/en/docs/reference/access-authn-authz/rbac.md
index 2be833826c..6dea2e0d31 100644
--- a/content/en/docs/reference/access-authn-authz/rbac.md
+++ b/content/en/docs/reference/access-authn-authz/rbac.md
@@ -891,6 +891,7 @@ rules:
 - apiGroups: ["rbac.authorization.k8s.io"]
   resources: ["clusterroles"]
   verbs: ["bind"]
+  # omit resourceNames to allow binding any ClusterRole
   resourceNames: ["admin","edit","view"]
 ---
 apiVersion: rbac.authorization.k8s.io/v1