diff --git a/addons/account_voucher/account_voucher.py b/addons/account_voucher/account_voucher.py
index dc46ec57722..2e656caca8a 100644
--- a/addons/account_voucher/account_voucher.py
+++ b/addons/account_voucher/account_voucher.py
@@ -1048,7 +1048,7 @@ class account_voucher(osv.osv):
             # currency rate difference
             if line.amount == line.amount_unreconciled:
                 if not line.move_line_id.amount_residual:
-                    raise osv.except_osv(_('Wrong bank statement line'),_("You must have delete the bank statement line manualy to which the payment was reconcile. Please check the payment of the partner %s by the amount of %s !")%(line.voucher_id.partner_id.name, line.voucher_id.amount))
+                    raise osv.except_osv(_('Wrong bank statement line'),_("You have to delete the bank statement line which the payment was reconciled to manually. Please check the payment of the partner %s by the amount of %s.")%(line.voucher_id.partner_id.name, line.voucher_id.amount))
                 currency_rate_difference = line.move_line_id.amount_residual - amount
             else:
                 currency_rate_difference = 0.0