diff --git a/etc/etc.amd64/Makefile.inc b/etc/etc.amd64/Makefile.inc
index 62a6200660eb..12d315099daa 100644
--- a/etc/etc.amd64/Makefile.inc
+++ b/etc/etc.amd64/Makefile.inc
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile.inc,v 1.2 2003/04/26 19:23:36 fvdl Exp $
+#	$NetBSD: Makefile.inc,v 1.3 2003/10/18 03:00:05 matt Exp $
 #
 #	etc.amd64/Makefile.inc -- amd64-specific etc Makefile targets
 #
@@ -10,7 +10,7 @@ BUILD_KERNELS=		INSTALL
 INSTALLATION_DIRS+= 	installation/floppy
 
 # mkisofs arguments to generate bootable iso image
-MKISOFS_FLAGS+=	-b installation/floppy/boot-big.fs
+MKISOFS_FLAGS+=	-b ${MACHINE}/installation/floppy/boot-big.fs
 
 snap_md_post:
 	${MAKESUMS} -t ${RELEASEDIR}/${MACHINE}/installation/floppy '*.fs'