Index: head/www/libwpe/Makefile
===================================================================
--- head/www/libwpe/Makefile	(revision 513529)
+++ head/www/libwpe/Makefile	(revision 513530)
@@ -1,20 +1,21 @@
 # $FreeBSD$
 
 PORTNAME=	libwpe
 PORTVERSION=	1.4.0
 CATEGORIES=	www
 MASTER_SITES=	https://wpewebkit.org/releases/
 
 MAINTAINER=	gnome@FreeBSD.org
 COMMENT=	General-purpose library for WPE WebKit
 
 LICENSE=	BSD2CLAUSE
 
 LIB_DEPENDS=	libxkbcommon.so:x11/libxkbcommon
 
-USES=		cmake pkgconfig localbase:ldflags gl tar:xz
+USES=		cmake compiler:c11 gl localbase:ldflags pkgconfig \
+		tar:xz
 
 USE_GL=		egl
 USE_LDCONFIG=	yes
 
 .include <bsd.port.mk>