Index: wp-settings.php
===================================================================
--- wp-settings.php	(revision 12609)
+++ wp-settings.php	(working copy)
@@ -332,7 +332,7 @@
  */
 function is_multisite() {
 	if ( defined('MULTISITE') )
-		return true;
+		return MULTISITE;
 
 	return false;
 }