diff --git a/trytond/osv/fields.py b/trytond/osv/fields.py
index 4674878db3..84139c64f2 100644
--- a/trytond/osv/fields.py
+++ b/trytond/osv/fields.py
@@ -1,4 +1,3 @@
-# -*- encoding: iso-8859-1 -*-
 """
  Fields:
       - simple