diff --git a/src/wp-includes/theme.php b/src/wp-includes/theme.php
index ac52fba757..1b372da37a 100644
--- a/src/wp-includes/theme.php
+++ b/src/wp-includes/theme.php
@@ -1039,7 +1039,9 @@ function display_header_text() {
  *
  * @since 4.2.0
  *
- * @return bool
+ * @see get_header_image()
+ *
+ * @return bool Whether a header image is set or not.
  */
 function has_header_image() {
 	return (bool) get_header_image();