diff --git a/games/hack/def.objects.h b/games/hack/def.objects.h
index b4400fc4a70..9d21be6f2d4 100644
--- a/games/hack/def.objects.h
+++ b/games/hack/def.objects.h
@@ -4,7 +4,6 @@
 /* objects have letter " % ) ( 0 _ ` [ ! ? / = * */
 #include "config.h"
 #include "def.objclass.h"
-#define	NULL	(char *)0
 
 struct objclass objects[] = {