diff --git a/docs/REST API/rest-api.md b/docs/REST API/rest-api.md
index 1babf62815..b2b30fa3fa 100644
--- a/docs/REST API/rest-api.md	
+++ b/docs/REST API/rest-api.md	
@@ -2186,7 +2186,7 @@ Modifies the Fleet's configuration with the supplied information.
 | sender_address                    | string  | The sender email address for the Fleet app. An invitation email is an example of the emails that may use this sender address                                          |
 | server                            | string  | The SMTP server for the Fleet app.                                                                                                                                    |
 | port                              | integer | The SMTP port for the Fleet app.                                                                                                                                      |
-| authentication_type               | string  | The authentication type used by the SMTP server. Options include `"authtype_username_and_password"` or `"none"`                                                       |
+| authentication_type               | string  | The authentication type used by the SMTP server. Options include `"authtype_username_password"` or `"none"`                                                       |
 | user_name                         | string  | The username used to authenticate requests made to the SMTP server.                                                                                                   |
 | password                          | string  | The password used to authenticate requests made to the SMTP server.                                                                                                   |
 | enable_ssl_tls                    | boolean | Whether or not SSL and TLS are enabled for the SMTP server.                                                                                                           |