diff --git a/doc/rados/operations/authentication.rst b/doc/rados/operations/authentication.rst
index 6bacf4c7dff..5c6c90447a8 100644
--- a/doc/rados/operations/authentication.rst
+++ b/doc/rados/operations/authentication.rst
@@ -154,6 +154,7 @@ during setup and/or troubleshooting to temporarily disable authentication.
     auth cluster required = none
     auth service required = none
     auth client required = none
+    auth_supported = none
 
 #. Or, disable ``cephx`` authentication for versions ``0.50`` and below 
    (deprecated as of version 0.51) by setting the following option in the