Custom Taxonomy Query

I have this query on my site, but it’s only returning 3 items instead of the 10 items that exist.

Anyone have any ideas?

<?php
		$args=array(
		  'portfolio_type' => 'carousel',
		  'posts_per_page' => -1,
		  'post_type' => 'portfolio-items'
		);
		$my_query = null;
		$my_query = new WP_Query($args);
		if( $my_query->have_posts() ) { while ($my_query->have_posts()) : $my_query->the_post(); ?>
		<div class="item"><a title="<?php the_title()?>" href="<?php the_permalink(); ?>"><?php the_title()?></a>
			</div>
<?php endwhile; } wp_reset_query(); ?>