diff --git a/offlineimap/utils/const.py b/offlineimap/utils/const.py
index b8300bb..56a6551 100644
--- a/offlineimap/utils/const.py
+++ b/offlineimap/utils/const.py
@@ -1,8 +1,9 @@
-# Copyright (C) 2013-2014 Eygene A. Ryabinkin and contributors
-#
-# Collection of classes that implement const-like behaviour
-# for various objects.
+"""
+Copyright (C) 2013-2014 Eygene A. Ryabinkin and contributors
 
+Collection of classes that implement const-like behaviour
+for various objects.
+"""
 import copy