--- sys/unix/Makefile.utl.orig	Thu Apr  6 02:59:04 2006
+++ sys/unix/Makefile.utl	Thu May 25 01:01:38 2006
@@ -89,7 +89,7 @@
 # flags for debugging:
 # CFLAGS = -g -I../include
 
-CFLAGS = -O -I../include -I../win/vulture -DVULTURE_NETHACK
+CFLAGS += -I../include -I../win/vulture -DVULTURE_NETHACK
 LFLAGS =
 
 LIBS =