diff --git a/docs/source/configure.rst b/docs/source/configure.rst
index db67c45..231d738 100644
--- a/docs/source/configure.rst
+++ b/docs/source/configure.rst
@@ -49,6 +49,10 @@ For the [mastodon] section:
 - instance_url: the url of your Mastodon instance
 - user_credentials: a file with the user credentials, generated by the command register_feed2toot_app
 - client_credentials: a file with the client credentials, generated by the command register_feed2toot_app
+- toot_visibility: any of the valid options for the `visibility` field
+  [here](https://github.com/tootsuite/documentation/blob/master/Using-the-API/API.md#posting-a-new-status).
+  Default is `public`, but `unlisted` prevents flooding
+  the instance's public timeline (which is more polite).
 
 For the [cache] section: