diff --git a/src/wp-admin/includes/post.php b/src/wp-admin/includes/post.php
index e1a1d3fc60..9356ace1aa 100644
--- a/src/wp-admin/includes/post.php
+++ b/src/wp-admin/includes/post.php
@@ -1066,12 +1066,12 @@ function get_available_post_mime_types($type = 'attachment') {
 }
 
 /**
- * Get the query vars for the current attachments request
+ * Get the query variables for the current attachments request.
  *
  * @since 4.2.0
  *
- * @param array|false $q Array of query variables to use to build the query or false to use $_GET superglobal.
- *
+ * @param array|false $q Optional. Array of query variables to use to build the query or false
+ *                       to use $_GET superglobal. Default false.
  * @return array The parsed query vars.
  */
 function wp_edit_attachments_query_vars( $q = false ) {