Comment: Order page by expiry date

in articles/articles.php i've copied the function list_by_date_for_anchor in list_by_expiry_date_for_anchor and changed just the $order parameter of the SQL query to have the results ordered by expiry date.

In view, i've added

// list articles by date (default) or by title (option 'articles_by_title')

    elseif(preg_match('/barticles_by_expiry_dateb/i', $item['options']))
                    $items =
    Articles::list_by_expiry_date_for_anchor('section:'.$item['id'], $offset,
    $items_per_page, $layout, $capability);

And in sections/edit.php

'<ul><li>articles_by_expiry_date - '.i18n::s('Sort pages by expiry date
    (and not by edition date)').'</li>'

It seems that all work but i was guessing if i've forgotten something.....

There something else i've to do to complete the change?