Index: wp-login.php
===================================================================
--- wp-login.php	(revision 19089)
+++ wp-login.php	(working copy)
@@ -405,7 +405,7 @@
 
 ?>
 
-<form name="lostpasswordform" id="lostpasswordform" action="<?php echo site_url('wp-login.php?action=lostpassword', 'login_post') ?>" method="post">
+<form name="lostpasswordform" id="lostpasswordform" action="<?php echo wp_lostpassword_url() ?>" method="post">
 	<p>
 		<label><?php _e('Username or E-mail:') ?><br />
 		<input type="text" name="user_login" id="user_login" class="input" value="<?php echo esc_attr($user_login); ?>" size="20" tabindex="10" /></label>