diff --git a/addons/account_anglo_saxon/invoice.py b/addons/account_anglo_saxon/invoice.py
index 0b3c573b943..ce9c89ad531 100644
--- a/addons/account_anglo_saxon/invoice.py
+++ b/addons/account_anglo_saxon/invoice.py
@@ -127,14 +127,14 @@ class account_invoice_line(osv.osv):
                             if line.get('invl_id', 0) == i_line.id and a == line['account_id']:
                                 uom = i_line.product_id.uos_id or i_line.product_id.uom_id
                                 valuation_price_unit = self.pool.get('product.uom')._compute_price(cr, uid, uom.id, i_line.product_id.standard_price, i_line.uos_id.id)
-                                if inv.currency_id.id != company_currency:
-                                    standard_price = self.pool.get('res.currency').compute(cr, uid, company_currency, inv.currency_id.id, standard_price, context={'date': inv.date_invoice})
                                 if i_line.product_id.cost_method != 'standard' and i_line.purchase_line_id:
                                     #for average/fifo/lifo costing method, fetch real cost price from incomming moves
                                     stock_move_obj = self.pool.get('stock.move')
                                     valuation_stock_move = stock_move_obj.search(cr, uid, [('purchase_line_id', '=', i_line.purchase_line_id.id)], limit=1, context=context)
                                     if valuation_stock_move:
                                         valuation_price_unit = stock_move_obj.browse(cr, uid, valuation_stock_move[0], context=context).price_unit
+                                if inv.currency_id.id != company_currency:
+                                    valuation_price_unit = self.pool.get('res.currency').compute(cr, uid, company_currency, inv.currency_id.id, valuation_price_unit, context={'date': inv.date_invoice})
                                 if valuation_price_unit != i_line.price_unit and line['price_unit'] == i_line.price_unit and acc:
                                     price_diff = round(i_line.price_unit - valuation_price_unit, account_prec)
                                     line.update({'price': round(valuation_price_unit * line['quantity'], account_prec)})