diff --git a/wp-includes/admin-bar.php b/wp-includes/admin-bar.php
index 49279a9926..9e75de5d13 100644
--- a/wp-includes/admin-bar.php
+++ b/wp-includes/admin-bar.php
@@ -22,7 +22,7 @@ function _wp_admin_bar_init() {
 		return false;
 
 	/* Load the admin bar class code ready for instantiation */
-	require( ABSPATH . WPINC . '/class-wp-admin-bar.php' );
+	require_once( ABSPATH . WPINC . '/class-wp-admin-bar.php' );
 
 	/* Instantiate the admin bar */
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 1db36202ed..a4e0b664ba 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-alpha-31409';
+$wp_version = '4.2-alpha-31411';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.