diff --git a/source/fundamentals/authentication.txt b/source/fundamentals/authentication.txt
index f4624d88..67423632 100644
--- a/source/fundamentals/authentication.txt
+++ b/source/fundamentals/authentication.txt
@@ -145,7 +145,7 @@ string as follow:
 
 .. tip:: Default Mechanism
 
-   MongoDB version 4.0 uses ``SCRAM-SHA-1`` as the default authorization mechanism
+   MongoDB version 4.0 uses ``SCRAM-SHA-1`` as the default authentication mechanism
    if the server does not support ``SCRAM-SHA-256``.
 
    To learn more on specifying the default mechanism, see :ref:`csharp-authentication-default`.