Index: wp-includes/link-template.php
===================================================================
--- wp-includes/link-template.php	(revision 21088)
+++ wp-includes/link-template.php	(working copy)
@@ -1385,7 +1385,7 @@
 
 	$home_root = parse_url(home_url());
 	$home_root = ( isset($home_root['path']) ) ? $home_root['path'] : '';
-	$home_root = preg_quote( trailingslashit( $home_root ), '|' );
+	$home_root = preg_quote( $home_root, '|' );
 
 	$request = preg_replace('|^'. $home_root . '|', '', $request);
 	$request = preg_replace('|^/+|', '', $request);