diff --git a/source/tutorial/enable-authentication.txt b/source/tutorial/enable-authentication.txt
index 4439ddd0c7d..924a1fff54d 100644
--- a/source/tutorial/enable-authentication.txt
+++ b/source/tutorial/enable-authentication.txt
@@ -22,15 +22,15 @@ For authentication, MongoDB supports various
 :doc:`/core/authentication-mechanisms`.
 
 The following tutorial enables access control on a standalone
-:program:`mongod` instance [#alternatives]_ and uses the :ref:`default authentication
+:program:`mongod` instance and uses the :ref:`default authentication
 mechanism <authentication-mechanism-default>`.
 
-.. [#alternatives]
+Replica sets and sharded clusters
+---------------------------------
 
-   For replica sets and sharded clusters, you can also enable access
-   control by :doc:`enforcing internal
-   authentication </core/security-internal-authentication>`. For details, see 
-   :doc:`/core/security-internal-authentication`.
+Replica sets and sharded clusters require internal authentication
+between members when access control is enabled. For more details,
+please see :doc:`/core/security-internal-authentication`.
 
 User Administrator
 ------------------