diff --git a/distrib/utils/libhack/Makefile.inc b/distrib/utils/libhack/Makefile.inc
index 011104e5f069..32bd897f4e88 100644
--- a/distrib/utils/libhack/Makefile.inc
+++ b/distrib/utils/libhack/Makefile.inc
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile.inc,v 1.9 1999/06/30 22:21:57 fvdl Exp $
+# $NetBSD: Makefile.inc,v 1.10 2000/08/22 14:06:37 abs Exp $
 # Include this fragment to build libhack.o
 # It is .o and not .a to make sure these are the
 # objects you get (and not the ones in libc.a)
@@ -13,6 +13,8 @@ HACKOBJS+= opendir.o
 libhack.o : $(HACKOBJS)
 	$(LD) -r -o $@ $(HACKOBJS)
 
+CFLAGS+= -Os
+
 # XXX .PATH won't work here, because of crunchgen used in the i386 build
 
 getcap.o: ${HACKSRC}/getcap.c