diff --git a/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php b/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php
index c36f19525c..bccf1d9388 100644
--- a/wp-includes/customize/class-wp-customize-nav-menu-item-setting.php
+++ b/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;
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 8e23892bce..ba48720fad 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45426';
+$wp_version = '5.3-alpha-45427';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.