WordPress ORDERBY TITLE

<?php
global $query_string;
query_posts( $query_string . '&orderby=title' );
if ( have_posts() ) : ?>
<header class="container">
    <?php
    the_archive_title( '<h1 class="text-center">', '</h1>' );
    the_archive_description( '<h4 class="text-center">', '</h4>' );
    ?>
</header><!-- .page-header -->

<section class="categorias">
    <div class="container">
        <?php  while ( have_posts() ) : the_post();?>
            <?php if (get_post_meta($post->ID, 'reservado', true) == 'no'): ?>
                <div class="col-md-4">
                    <h3>
                        <a href="<?php echo get_permalink();?>">
                            <?php the_title();?>
                        </a>
                    </h3>
                    <?php echo odin_thumbnail(400, 200, true, 'minha-classe' ); ?>
                </div>
            <?php endif ?>
        <?php endwhile; ?>
        <div class="col-md-12">
            <div class="text-center">
                <ul class="pagination">
                    <li><?php echo paginate_links(); ?></li>
                </ul>
            </div>
        </div>
    <?php else:?>
        <div class="col-md-12 text-center">
            <h1>Não existem pontos nesta semana</h1>
            <img src="/logo.png" class="img-responsive">
            <?php get_search_form(); ?>
        </div>
    <?php endif; ?>
</div>
</section>