diff --git a/addons/account/models/partner.py b/addons/account/models/partner.py
index e789c36080b..2b861562eeb 100644
--- a/addons/account/models/partner.py
+++ b/addons/account/models/partner.py
@@ -228,18 +228,6 @@ class ResPartner(models.Model):
     _inherit = 'res.partner'
     _description = 'Partner'
 
-    @api.multi
-    def onchange_state(self, state_id):
-        res = super(ResPartner, self).onchange_state(state_id=state_id)
-        res['value']['property_account_position_id'] = self.env['account.fiscal.position']._get_fpos_by_region(
-               country_id=self.env.context.get('country_id'), state_id=state_id, zipcode=self.env.context.get('zip'))
-        return res
-
-    @api.onchange('country_id', 'zip')
-    def _onchange_country_id(self):
-        self.property_account_position_id = self.env['account.fiscal.position']._get_fpos_by_region(
-                country_id=self.country_id.id, state_id=self.state_id.id, zipcode=self.zip)
-
     @api.multi
     def _credit_debit_get(self):
         tables, where_clause, where_params = self.env['account.move.line']._query_get()
diff --git a/addons/website_sale/controllers/main.py b/addons/website_sale/controllers/main.py
index 8264cc4ac01..680be96df9d 100644
--- a/addons/website_sale/controllers/main.py
+++ b/addons/website_sale/controllers/main.py
@@ -615,9 +615,6 @@ class website_sale(http.Controller):
                 partner_id = order.partner_id.id
 
         # save partner informations
-        if billing_info.get('country_id'):
-            billing_info['property_account_position_id'] = request.registry['account.fiscal.position']._get_fpos_by_region(
-                   cr, SUPERUSER_ID, billing_info['country_id'], billing_info.get('state_id') or False, billing_info.get('zip'), billing_info.get('vat') and True or False)
         if partner_id and request.website.partner_id.id != partner_id:
             orm_partner.write(cr, SUPERUSER_ID, [partner_id], billing_info, context=context)
         else: