public function getListSorting()
    {
        $aListSorting = parent::getListSorting();

        if (array_keys($aListSorting['oxcountry']) === ['oxactive']) {
            $aListSorting['oxcountry'][$this->_getSecondSortFieldName()] = 'asc';
        }

        return $aListSorting;
    }