Index: head/emulators/dgen-sdl/Makefile
===================================================================
--- head/emulators/dgen-sdl/Makefile	(revision 445610)
+++ head/emulators/dgen-sdl/Makefile	(revision 445611)
@@ -1,32 +1,38 @@
 # Created by: Maxim Sobolev <sobomax@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	dgen-sdl
 PORTVERSION=	1.33
 PORTREVISION=	4
 CATEGORIES=	emulators
 MASTER_SITES=	SF/dgen/dgen/${PORTVERSION}
 
 MAINTAINER=	ak@FreeBSD.org
 COMMENT=	Wonderful Sega Genesis/MegaDrive emulator
 
 USE_SDL=	sdl
 USE_GL=		yes
 USES=		gmake libarchive
 GNU_CONFIGURE=	yes
 
 PLIST_FILES=	bin/dgen \
 		bin/dgen_tobin \
 		man/man1/dgen.1.gz \
 		man/man1/dgen_tobin.1.gz \
 		man/man5/dgenrc.5.gz
 
 .include <bsd.port.pre.mk>
 
 .if ${ARCH} == i386
 BUILD_DEPENDS+=	nasm:devel/nasm
 .else
 CONFIGURE_ARGS+=	--disable-asm
 .endif
 
+post-patch:
+	@${REINPLACE_CMD} -e '/@NASM@/s/--//' \
+		${WRKSRC}/Makefile.in \
+		${WRKSRC}/mz80/Makefile.in \
+		${WRKSRC}/star/Makefile.in
+
 .include <bsd.port.post.mk>