diff --git a/wp-includes/class-wp-customize-section.php b/wp-includes/class-wp-customize-section.php
index 3012547504..7af62189e6 100644
--- a/wp-includes/class-wp-customize-section.php
+++ b/wp-includes/class-wp-customize-section.php
@@ -529,7 +529,7 @@ class WP_Customize_Nav_Menu_Section extends WP_Customize_Section {
 	 *
 	 * @return array
 	 */
-	function json() {
+	public function json() {
 		$exported = parent::json();
 		$exported['menu_id'] = intval( preg_replace( '/^nav_menu\[(\d+)\]/', '$1', $this->id ) );
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index f9bd1b35d0..4965738616 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.3-alpha-32876';
+$wp_version = '4.3-alpha-32877';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.