diff --git a/src/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php b/src/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php
index c36f19525c..bccf1d9388 100644
--- a/src/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php
+++ b/src/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php
@@ -84,7 +84,7 @@ class WP_Customize_Nav_Menu_Item_Setting extends WP_Customize_Setting {
 	 * Storage of pre-setup menu item to prevent wasted calls to wp_setup_nav_menu_item().
 	 *
 	 * @since 4.3.0
-	 * @var array
+	 * @var array|null
 	 */
 	protected $value;