new wp-query wont recognize custom taxonomy

This is what I’m using for the query, and it is recognizing all arguments EXCEPT the taxonomy. What/ where can I look to troubleshoot this?

$args = array(
'post_type' => 'films',
 'tax_query' => array(
			'taxonomy' => 'film_category',
			'field' => 'slug',
			'terms' => array( 'originalfilms' ) ),
  'posts_per_page' => '6'
);

$the_query = new WP_Query( $args );
while ( $the_query->have_posts() ) : $the_query->the_post();
...stuff here...

endwhile;
// Reset Post Data
wp_reset_postdata();

THanks!