Index: src/wp-login.php
===================================================================
--- src/wp-login.php	(revision 44362)
+++ src/wp-login.php	(working copy)
@@ -27,10 +27,14 @@
  *
  * @since 2.1.0
  *
- * @param string   $title    Optional. WordPress login Page title to display in the `<title>` element.
- *                           Default 'Log In'.
- * @param string   $message  Optional. Message to display in header. Default empty.
- * @param WP_Error $wp_error Optional. The error to pass. Default is a WP_Error instance.
+ * @global string  $error
+ * @global string  $interim_login
+ * @global string  $action
+ *
+ * @param string   $title         Optional. WordPress login Page title to display in the `<title>` element.
+ *                                Default 'Log In'.
+ * @param string   $message       Optional. Message to display in header. Default empty.
+ * @param WP_Error $wp_error      Optional. The error to pass. Default is a WP_Error instance.
  */
 function login_header( $title = 'Log In', $message = '', $wp_error = null ) {
 	global $error, $interim_login, $action;