diff --git a/product/ERP5/PropertySheet/Simulation.py b/product/ERP5/PropertySheet/Simulation.py
index b52bfaedd3d27a8cee35d21e4167fcb34b1abeca..50047d92ecf0ed0f88806f6be99a0efc63345664 100644
--- a/product/ERP5/PropertySheet/Simulation.py
+++ b/product/ERP5/PropertySheet/Simulation.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 ##############################################################################
 #
 # Copyright (c) 2002 Nexedi SARL and Contributors. All Rights Reserved.
@@ -74,5 +75,5 @@ class Simulation:
             'mode'        : 'w' },
   )
 
-  _categories = ('order', 'delivery','delivery_mode','incoterm')
+  _categories = ('order', 'delivery', 'delivery_mode', 'incoterm')