Index: head/biology/scrm/Makefile
===================================================================
--- head/biology/scrm/Makefile	(revision 535274)
+++ head/biology/scrm/Makefile	(revision 535275)
@@ -1,22 +1,22 @@
 # $FreeBSD$
 
 PORTNAME=	scrm
 DISTVERSIONPREFIX=	v
 DISTVERSION=	1.7.4
 CATEGORIES=	biology
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Coalescent simulator for biological sequences
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYING
 
-USES=		autoreconf gmake
+USES=		autoreconf compiler:c++11-lang gmake
 USE_GITHUB=	yes
 
 GNU_CONFIGURE=	yes
 
 PLIST_FILES=	bin/scrm \
 		man/man1/scrm.1.gz
 
 .include <bsd.port.mk>