diff --git a/sys/arch/i386/stand/bootxx/bootxx_msdos/Makefile b/sys/arch/i386/stand/bootxx/bootxx_msdos/Makefile
index a590b1567fbb..12a7e78c66ec 100644
--- a/sys/arch/i386/stand/bootxx/bootxx_msdos/Makefile
+++ b/sys/arch/i386/stand/bootxx/bootxx_msdos/Makefile
@@ -1,7 +1,11 @@
-# $NetBSD: Makefile,v 1.4 2020/01/22 06:13:18 martin Exp $
+# $NetBSD: Makefile,v 1.5 2023/08/30 18:46:51 christos Exp $
+
+NOMAN=yes
+.include <bsd.init.mk>
 
 PROG=	bootxx_msdos
 FS=	dosfs
 CPPFLAGS=-DBOOT_FROM_FAT -DTERSE_ERROR -DSA_DOSFS_NO_BIG_PART_SUPPORT
 
 .include <../Makefile.bootxx>
+OPT_SIZE.clang += -Oz
diff --git a/sys/arch/i386/stand/bootxx/bootxx_ustarfs/Makefile b/sys/arch/i386/stand/bootxx/bootxx_ustarfs/Makefile
index 5fde874e54c4..ced2095cce1f 100644
--- a/sys/arch/i386/stand/bootxx/bootxx_ustarfs/Makefile
+++ b/sys/arch/i386/stand/bootxx/bootxx_ustarfs/Makefile
@@ -1,7 +1,11 @@
-# $NetBSD: Makefile,v 1.3 2009/11/18 21:02:16 dsl Exp $
+# $NetBSD: Makefile,v 1.4 2023/08/30 18:46:52 christos Exp $
+
+NOMAN=yes
+.include <bsd.init.mk>
 
 FS=ustarfs
 
 BOOTXX_SECTORS=16
 
 .include <../Makefile.bootxx>
+OPT_SIZE.clang += -Oz