Index: wp-includes/link-template.php
===================================================================
--- wp-includes/link-template.php	(revision 27063)
+++ wp-includes/link-template.php	(working copy)
@@ -2106,7 +2106,7 @@
  * @return string Includes url link with optional path appended.
 */
 function includes_url( $path = '', $scheme = null ) {
-	$url = site_url( '/' . WPINC . '/', $scheme );
+	$url = network_site_url( '/' . WPINC . '/', $scheme );
 
 	if ( $path && is_string( $path ) )
 		$url .= ltrim($path, '/');