diff --git a/collects/htdp/world.ss b/collects/htdp/world.ss
index 24b043bdb4..9ae3f12650 100644
--- a/collects/htdp/world.ss
+++ b/collects/htdp/world.ss
@@ -3,7 +3,7 @@
     color? ;; Symbol -> Boolean 
 |#
 ;; Thu Dec  1 17:03:03 EST 2005: fixed place-image; all coordinates okay now
-(module world2 mzscheme
+(module world mzscheme
   (require				; (lib "unitsig.ss")
    (lib "etc.ss")
    (lib "class.ss")