Index: head/devel/py-subvertpy/Makefile
===================================================================
--- head/devel/py-subvertpy/Makefile	(revision 523691)
+++ head/devel/py-subvertpy/Makefile	(revision 523692)
@@ -1,22 +1,22 @@
 # Created by: Carlo Strub (c-s@c-s.li)
 # $FreeBSD$
 
 PORTNAME=	subvertpy
 PORTVERSION=	0.9.2
 CATEGORIES=	devel
 MASTER_SITES=	https://jelmer.uk/subvertpy/
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	cs@FreeBSD.org
 COMMENT=	Python bindings for subversion
 
 LICENSE=	GPLv2
 
 BUILD_DEPENDS+=	svn:devel/subversion
 
-USES=		python:2.7
+USES=		compiler:c11 python:2.7
 USE_PYTHON=	distutils autoplist
 MAKE_ENV=	HOME=/dev/null
 INSTALL_TARGET=	install-strip
 
 .include <bsd.port.mk>