diff --git a/src/wp-includes/block-template-utils.php b/src/wp-includes/block-template-utils.php
index f7a10ab67290..34588247744e 100644
--- a/src/wp-includes/block-template-utils.php
+++ b/src/wp-includes/block-template-utils.php
@@ -355,7 +355,7 @@ function _get_block_template_file( $template_type, $slug ) {
  *     @type string   $post_type    Post type to get the templates for.
  * }
  *
- * @return array Template
+ * @return array|null Template.
  */
 function _get_block_templates_files( $template_type, $query = array() ) {
 	if ( 'wp_template' !== $template_type && 'wp_template_part' !== $template_type ) {