diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 2db06e1985..e86e6382f1 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -1346,7 +1346,8 @@ function wp_die( $message, $title = '' ) {
 	<title><?php echo $title ?></title>
 	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 	<link rel="stylesheet" href="<?php echo $admin_dir; ?>install.css" type="text/css" />
-<?php if ( ('rtl' == $wp_locale->text_direction) ) : ?>
+<?php 
+if ( ( $wp_locale ) && ('rtl' == $wp_locale->text_direction) ) : ?>
 	<link rel="stylesheet" href="<?php echo $admin_dir; ?>install-rtl.css" type="text/css" />
 <?php endif; ?>
 </head>