diff --git a/wp-includes/class-wp-customize-manager.php b/wp-includes/class-wp-customize-manager.php
index 556bc60d8b..43859f1dda 100644
--- a/wp-includes/class-wp-customize-manager.php
+++ b/wp-includes/class-wp-customize-manager.php
@@ -1175,7 +1175,7 @@ final class WP_Customize_Manager {
 		) );
 
 		if ( $menus ) {
-			$choices = array( 0 => __( '— Select —' ) );
+			$choices = array( '' => __( '— Select —' ) );
 			foreach ( $menus as $menu ) {
 				$choices[ $menu->term_id ] = wp_html_excerpt( $menu->name, 40, '…' );
 			}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index cc93f3145f..a61d23176a 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-alpha-31068';
+$wp_version = '4.2-alpha-31069';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.