Index: wp-includes/link-template.php
===================================================================
--- wp-includes/link-template.php	(revision 21514)
+++ wp-includes/link-template.php	(working copy)
@@ -626,7 +626,7 @@
 	if ( 'category' == $taxonomy )
 		$link = apply_filters( 'category_feed_link', $link, $feed );
 	elseif ( 'post_tag' == $taxonomy )
-		$link = apply_filters( 'category_feed_link', $link, $feed );
+		$link = apply_filters( 'tag_feed_link', $link, $feed );
 	else
 		$link = apply_filters( 'taxonomy_feed_link', $link, $feed, $taxonomy );