Index: head/mail/claws-mail-litehtml_viewer/Makefile
===================================================================
--- head/mail/claws-mail-litehtml_viewer/Makefile	(revision 541366)
+++ head/mail/claws-mail-litehtml_viewer/Makefile	(revision 541367)
@@ -1,19 +1,20 @@
 # Created by: Rozhuk Ivan <rozhuk.im@gmail.com>
 # $FreeBSD$
 
 PORTNAME=	litehtml_viewer
 
 COMMENT=	Viewer plugin for HTML emails, using the litehtml library
 
+USES+=		compiler:c++11-lang
 USE_GNOME=	cairo glib20 
 LIB_DEPENDS=	libfontconfig.so:x11-fonts/fontconfig \
 		libgumbo.so:devel/gumbo \
 		libcurl.so:ftp/curl
 
 CLAWS_PLUGINS_BUILD=	${PORTNAME}
 
 post-configure:
 	@${RM} ${WRKSRC}/version
 
 .include "../claws-mail/Makefile.claws"
 .include <bsd.port.mk>