diff --git a/docs/admin/authorization.md b/docs/admin/authorization.md
index efd93fb497..2643702dfc 100644
--- a/docs/admin/authorization.md
+++ b/docs/admin/authorization.md
@@ -172,6 +172,11 @@ Kubernetes API.
 
 As of 1.3 RBAC mode is in alpha and considered experimental.
 
+To use RBAC, you must both enable the authorization module with `--authorization-mode=RBAC`,
+and [enable the API version](
+docs/admin/cluster-management.md/#Turn-on-or-off-an-api-version-for-your-cluster),
+with a `--runtime-config=` that includes `rbac.authorization/v1alpha1`.
+
 ### Roles, RolesBindings, ClusterRoles, and ClusterRoleBindings
 
 The RBAC API Group declares four top level types which will be covered in this