Discount Module code error

When trying to apply a valid discount code the always returns that the user has entered an invalid discount code.

This is due to a query error in modules/discount/discount.inc.php on line 99

    $rs = $db->Execute(sqlSelect($db,"discount","*","( date_start IS NULL OR date_start=0 OR date_start<".time().") AND date_expire<=".time()." AND name=::$discount_code::"));

This query should read..

    $rs = $db->Execute(sqlSelect($db,"discount","*","( date_start IS NULL OR date_start=0 OR date_start<".time().") AND date_expire>=".time()." AND name=::$discount_code::"));