A rare type of congenital fistula between the right coronary artery and the right atrium, where fistula was draining just above the inferior vena caval orifice, is presented. Patient was operated on utilizing cardiopulmonary bypass and the fistulous opening into the right atrium was closed by interrupted ti-cron sutures supported with teflon pledgets. The benefits of using cardiopulmonary bypass in these operations or at least having it stand-by in the operating room are emphasized for safer closure of the fistula when needed.