Index: wp-includes/default-filters.php
===================================================================
--- wp-includes/default-filters.php	(revision 15448)
+++ wp-includes/default-filters.php	(working copy)
@@ -143,7 +143,6 @@
 add_filter( 'wp_sprintf', 'wp_sprintf_l', 10, 2 );
 
 // RSS filters
-add_filter( 'the_title_rss',      'strip_tags'      );
 add_filter( 'the_title_rss',      'ent2ncr',      8 );
 add_filter( 'the_title_rss',      'esc_html'        );
 add_filter( 'the_content_rss',    'ent2ncr',      8 );