Index: head/net/packetdrill/Makefile
===================================================================
--- head/net/packetdrill/Makefile	(revision 423750)
+++ head/net/packetdrill/Makefile	(revision 423751)
@@ -1,44 +1,44 @@
 # $FreeBSD$
 
 PORTNAME=	packetdrill
 PORTVERSION=	0.0.20161001
 CATEGORIES=	net ipv6
 
 MAINTAINER=	gnn@FreeBSD.org
 COMMENT=	Network stack testing tool
 
 LICENSE=	GPLv2
 
 USES=		bison uidfix
 USE_GITHUB=	yes
 GH_ACCOUNT=	freebsd-net
 GH_TAGNAME=	467b39b
-WRKSRC=		${WRKDIR}/${PORTNAME}-${GH_TAGNAME}/gtests/net/packetdrill
+WRKSRC_SUBDIR=	gtests/net/packetdrill
 PLIST_FILES=	bin/${PORTNAME}
 PORTDATA=	packetdrill.el packetdrill.vim
 PORTDOCS=	README
 PORTEXAMPLES=	tests
 
 OPTIONS_DEFINE=	DOCS EXAMPLES
 
 pre-build:
 	${INSTALL_DATA} ${FILESDIR}/Makefile ${FILESDIR}/Makefile.inc ${WRKSRC}
 .for F in libpd packetdrill
 	${MKDIR} ${WRKSRC}/${F}
 	${INSTALL_DATA} ${FILESDIR}/Makefile.${F} ${WRKSRC}/${F}/Makefile
 .endfor
 
 post-install:
 	@${MKDIR} ${STAGEDIR}${DATADIR}
 	cd ${WRKSRC}/contrib && ${INSTALL_DATA} ${PORTDATA} \
 	    ${STAGEDIR}${DATADIR}
 
 post-install-EXAMPLES-on:
 	@${MKDIR} ${STAGEDIR}${EXAMPLESDIR}
 	cd ${WRKSRC} && ${COPYTREE_SHARE} ${PORTEXAMPLES} \
 	    ${STAGEDIR}${EXAMPLESDIR}
 post-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	cd ${WRKSRC} && ${INSTALL_DATA} ${PORTDOCS} ${STAGEDIR}${DOCSDIR}
 
 .include <bsd.port.mk>