diff --git a/src/wp-includes/deprecated.php b/src/wp-includes/deprecated.php
index de2b5c6abe..69a6bfb2b3 100644
--- a/src/wp-includes/deprecated.php
+++ b/src/wp-includes/deprecated.php
@@ -3382,6 +3382,9 @@ function rich_edit_exists() {
  * @since 2.7.0
  * @access private
  * @deprecated 3.9.0
+ *
+ * @param int $count Number of topics.
+ * @return int Number of topics.
  */
 function default_topic_count_text( $count ) {
 	return $count;