diff --git a/crans_utils.py b/crans_utils.py
index 480d275..4aacd96 100644
--- a/crans_utils.py
+++ b/crans_utils.py
@@ -3,8 +3,9 @@
 #
 # CRANS_UTILS.PY-- Utils for Cr@ns gestion
 #
-# Copyright (c) 2010, Cr@ns <roots@crans.org>
-# Author: Antoine Durand-Gasselin <adg@crans.org>
+# Copyright (c) 2010-2013, Cr@ns <roots@crans.org>
+# Authors: Antoine Durand-Gasselin <adg@crans.org>
+#         Pierre-Elliott Bécue <becue@crans.org>
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
diff --git a/filter.py b/filter.py
index 42b1a35..9696f70 100644
--- a/filter.py
+++ b/filter.py
@@ -1,5 +1,16 @@
 #/usr/bin/env python
 # -*- coding: utf8 -*-
+#
+# filter.py --- Workaround with ldap filters
+#
+# Redraw filters like attr1=val1&attr2=val2|attr3=val3
+# in (|(&(attr1=val1)(attr2=val2))(attr3=val3))
+#
+# Copyright (C) 2010-2013 Cr@ns <roots@crans.org>
+# Author: Pierre-Elliott Bécue <becue@crans.org>
+#
+# 
+# License: WTFPL
 
 def human_to_ldap(filtre):
     """