diff --git a/Yesod/Auth/OAuth2/Slack.hs b/Yesod/Auth/OAuth2/Slack.hs
index d2d153f..4c5fae6 100644
--- a/Yesod/Auth/OAuth2/Slack.hs
+++ b/Yesod/Auth/OAuth2/Slack.hs
@@ -1,5 +1,5 @@
 {-# LANGUAGE OverloadedStrings #-}
---
+-- |
 -- OAuth2 plugin for https://slack.com/
 --
 -- * Authenticates against slack