diff --git a/addons/account/invoice.py b/addons/account/invoice.py
index 5887613940c..39e03c710ad 100644
--- a/addons/account/invoice.py
+++ b/addons/account/invoice.py
@@ -448,10 +448,10 @@ class account_invoice(osv.osv):
         ait_obj = self.pool.get('account.invoice.tax')
         cur_obj = self.pool.get('res.currency')
         acc_obj = self.pool.get('account.account')
+        self.button_compute(cr, uid, ids, context={}, set_total=True)
         for inv in self.browse(cr, uid, ids):
             if inv.move_id:
                 continue
-            self.button_compute(cr, uid, ids, context={},set_total=True)
             if inv.type in ('in_invoice', 'in_refund') and abs(inv.check_total - inv.amount_total) >= (inv.currency_id.rounding/2.0):
                 raise osv.except_osv(_('Bad total !'), _('Please verify the price of the invoice !\nThe real total does not match the computed total.'))
             if not inv.date_invoice: