diff --git a/source/reference/parameters.txt b/source/reference/parameters.txt
index 1c6aad994c7..42cb509205f 100644
--- a/source/reference/parameters.txt
+++ b/source/reference/parameters.txt
@@ -73,8 +73,7 @@ Authentication Parameters
 
       * - :ref:`PLAIN <security-auth-ldap>` (LDAP SASL)
 
-        - External authentication using LDAP. You can also use ``PLAIN``
-          for authenticating in-database users. ``PLAIN`` transmits
+        - External authentication using LDAP. ``PLAIN`` transmits
           passwords in plain text. This mechanism is available only in
           `MongoDB Enterprise
           <http://www.mongodb.com/products/mongodb-enterprise?jmp=docs>`_.