diff --git a/cmd/mtredisalize/main.go b/cmd/mtredisalize/main.go
index 1c8ca1f..058537f 100644
--- a/cmd/mtredisalize/main.go
+++ b/cmd/mtredisalize/main.go
@@ -2,6 +2,9 @@
 // Use of this source code is governed by the MIT license
 // that can be found in the LICENSE file.
 
+// Package main implements a fake Redis server which can be configured
+// as Redis Backend in Minetest server. It tracks the changes in the
+// database and forwards them to the mtwebmapper.
 package main
 
 import (