diff -ur ../wordpress.orig/wp-includes/post-template.php ./wp-includes/post-template.php
--- ../wordpress.orig/wp-includes/post-template.php	2009-02-04 00:06:17.000000000 +0100
+++ ./wp-includes/post-template.php	2009-06-04 14:13:53.000000000 +0200
@@ -629,7 +629,7 @@
 			$output .= '</ul></li>';
 	}
 
-	$output = apply_filters('wp_list_pages', $output);
+	$output = apply_filters('wp_list_pages', $output, $r);
 
 	if ( $r['echo'] )
 		echo $output;