diff --git a/src/wp-includes/post.php b/src/wp-includes/post.php
index 729e13d5f4..4eed68d539 100644
--- a/src/wp-includes/post.php
+++ b/src/wp-includes/post.php
@@ -6079,7 +6079,7 @@ function _prime_post_caches( $ids, $update_term_cache = true, $update_meta_cache
 }
 
 /**
- * If any trashed posts have a given slug, add a suffix.
+ * Adds a suffix if any trashed posts have a given slug.
  *
  * Store its desired (i.e. current) slug so it can try to reclaim it
  * if the post is untrashed.
@@ -6087,9 +6087,10 @@ function _prime_post_caches( $ids, $update_term_cache = true, $update_meta_cache
  * For internal use.
  *
  * @since 4.5.0
+ * @access private
  *
  * @param string $post_name    Slug.
- * @param string $post__not_in Post ID that should be ignored.
+ * @param string $post__not_in Optional. Post ID that should be ignored. Default 0.
  */
 function wp_add_trashed_suffix_to_post_name_for_trashed_posts( $post_name, $post_ID = 0 ) {
 	$trashed_posts_with_desired_slug = get_posts( array(
@@ -6108,7 +6109,7 @@ function wp_add_trashed_suffix_to_post_name_for_trashed_posts( $post_name, $post
 }
 
 /**
- * For a given post, add a trashed suffix.
+ * Adds a trashed suffix For a given post.
  *
  * Store its desired (i.e. current) slug so it can try to reclaim it
  * if the post is untrashed.
@@ -6116,6 +6117,7 @@ function wp_add_trashed_suffix_to_post_name_for_trashed_posts( $post_name, $post
  * For internal use.
  *
  * @since 4.5.0
+ * @access private
  *
  * @param WP_Post $post The post.
  */