Index: feed-rss2-comments.php
===================================================================
--- feed-rss2-comments.php	(revision 6226)
+++ feed-rss2-comments.php	(working copy)
@@ -6,6 +6,7 @@
 <rss version="2.0"
 	xmlns:content="http://purl.org/rss/1.0/modules/content/"
 	xmlns:dc="http://purl.org/dc/elements/1.1/"
+	xmlns:atom="http://www.w3.org/2005/Atom"
 	>
 <channel>
 	<title><?php
@@ -16,6 +17,7 @@
 		else
 			printf(__('Comments for %s'), get_bloginfo_rss( 'name' ) . get_wp_title_rss());
 	?></title>
+	<atom:link href="<?php bloginfo('comments_rss2_url') ?>" rel="self" type="application/rss+xml" />
 	<link><?php (is_single()) ? the_permalink_rss() : bloginfo_rss("url") ?></link>
 	<description><?php bloginfo_rss("description") ?></description>
 	<pubDate><?php echo gmdate('r'); ?></pubDate>
Index: feed-rss2.php
===================================================================
--- feed-rss2.php	(revision 6226)
+++ feed-rss2.php	(working copy)
@@ -9,11 +9,13 @@
 	xmlns:content="http://purl.org/rss/1.0/modules/content/"
 	xmlns:wfw="http://wellformedweb.org/CommentAPI/"
 	xmlns:dc="http://purl.org/dc/elements/1.1/"
+	xmlns:atom="http://www.w3.org/2005/Atom"
 	<?php do_action('rss2_ns'); ?>
 >
 
 <channel>
 	<title><?php bloginfo_rss('name'); wp_title_rss(); ?></title>
+	<atom:link href="<?php bloginfo('rss2_url') ?>" rel="self" type="application/rss+xml" />
 	<link><?php bloginfo_rss('url') ?></link>
 	<description><?php bloginfo_rss("description") ?></description>
 	<pubDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_lastpostmodified('GMT'), false); ?></pubDate>