diff --git a/distrib/evbppc/ramdisk/Makefile b/distrib/evbppc/ramdisk/Makefile
index b27532cedc71..d5d33b5897d5 100644
--- a/distrib/evbppc/ramdisk/Makefile
+++ b/distrib/evbppc/ramdisk/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.22 2017/02/09 15:24:08 joerg Exp $
+#	$NetBSD: Makefile,v 1.23 2017/07/23 20:59:00 joerg Exp $
 
 .include <bsd.own.mk>
 .include "${NETBSDSRCDIR}/distrib/common/Makefile.distrib"
@@ -8,7 +8,7 @@ IMAGESIZE=	3280k
 MAKEFS_FLAGS+=	-f 15
 
 WARNS=		1
-DBG=		-Os
+DBG=		${${ACTIVE_CC} == "clang":? -Oz -fomit-frame-pointer : -Os } -fno-unwind-tables
 
 CRUNCHBIN=	ramdiskbin
 CRUNCHGEN_FLAGS=-d "${DBG}"