diff --git a/manifests/init.pp b/manifests/init.pp
index d5f050e..7ed3ec0 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -54,6 +54,8 @@
 # [*users*]
 #   List of hashes with users information.
 #
+# [*config*]
+#   Hash with the configuration for Mastodon .env.production file
 class mastodon (
   String $ensure = 'present',
   String $hostname = 'mastodon.example.org',