diff --git a/sys/boot/i386/boot0/Makefile b/sys/boot/i386/boot0/Makefile
index db761c2f2663..d0ce8e598c60 100644
--- a/sys/boot/i386/boot0/Makefile
+++ b/sys/boot/i386/boot0/Makefile
@@ -78,6 +78,3 @@ CFLAGS+=-DFLAGS=${BOOT_BOOT0_FLAGS} \
 LDFLAGS=${LDFLAGS_BIN}
 
 .include <bsd.prog.mk>
-
-# XXX: clang integrated-as doesn't grok .codeNN directives yet
-CFLAGS.boot0.S=		${CLANG_NO_IAS}