diff --git a/addons/account_payment/account_payment.py b/addons/account_payment/account_payment.py
index 1840176519a..4119aa28e38 100644
--- a/addons/account_payment/account_payment.py
+++ b/addons/account_payment/account_payment.py
@@ -52,8 +52,8 @@ class payment_mode(osv.osv):
             WHERE pm.id = %s """, [payment_code])
         return [x[0] for x in cr.fetchall()]
     
-    def onchange_company_id (self, cr, uid, ids, company_id = False, context = None):
-        result={}
+    def onchange_company_id (self, cr, uid, ids, company_id=False, context=None):
+        result = {}
         if company_id:
             partner_id = self.pool.get('res.company').browse(cr, uid, company_id).partner_id.id
             result['partner_id'] = partner_id