Order by Title isn’t Working

Hi,
I am not sure why the code below is not printing the topics in alphabetical order :(.

<?php 

$my_query = new WP_Query();
$my_query->query(array('category_name' => 'product-reviews',
					   'orderby' => 'title',
					   'order' => 'asc'));

?>

<?php while ($my_query->have_posts()) : $my_query->the_post(); ?>
    <li><a href="<?php the_permalink() ?>" title="Permanent Link to <?php the_title(); ?>"><?php the_title(); ?></a></li>
<?php endwhile; ?>

Any ideas?

Thank You.