diff --git a/wp-admin/includes/upgrade.php b/wp-admin/includes/upgrade.php
index e7a09222e..94f2d6530 100644
--- a/wp-admin/includes/upgrade.php
+++ b/wp-admin/includes/upgrade.php
@@ -71,7 +71,7 @@ function wp_install( $blog_title, $user_name, $user_email, $public, $deprecated
$email_password = true;
} else if ( !$user_id ) {
// Password has been provided
- $message = __('Your chosen password.');
+ $message = ''.__('Your chosen password.').'';
$user_id = wp_create_user($user_name, $user_password, $user_email);
} else {
$message = __('User already exists. Password inherited.');