diff --git a/public_html/wp-content/plugins/pattern-directory/includes/pattern-post-type.php b/public_html/wp-content/plugins/pattern-directory/includes/pattern-post-type.php
index 2f48b50b..45c01e67 100644
--- a/public_html/wp-content/plugins/pattern-directory/includes/pattern-post-type.php
+++ b/public_html/wp-content/plugins/pattern-directory/includes/pattern-post-type.php
@@ -295,6 +295,7 @@ function register_rest_fields() {
 				$slugs = wp_list_pluck( wp_get_object_terms( get_the_ID(), 'wporg-pattern-category' ), 'slug' );
 				$slugs = array_map( 'sanitize_title', $slugs );
 				$slugs = array_diff( $slugs, [ 'featured' ] );
+				$slugs = array_values( $slugs );
 
 				return $slugs;
 			},