diff --git a/www/libwww/Makefile b/www/libwww/Makefile
index 4d78d5746a2e..db8aaf7acc1f 100644
--- a/www/libwww/Makefile
+++ b/www/libwww/Makefile
@@ -1,29 +1,35 @@
 PORTNAME=	libwww
 PORTVERSION=	5.4.2
 CATEGORIES=	www devel
 MASTER_SITES=	https://www.w3.org/Library/Distribution/ \
 		https://www.w3.org/Library/Distribution/old/
 DISTNAME=	w3c-${PORTNAME}-${PORTVERSION}
 
 MAINTAINER=	dbaio@FreeBSD.org
 COMMENT=	W3C Reference Library
 WWW=		https://www.w3.org/Library/
 
 LICENSE=	W3C
 LICENSE_NAME=	W3C IPR SOFTWARE NOTICE
 LICENSE_FILE=	${WRKSRC}/LICENSE.html
 LICENSE_PERMS=	dist-mirror dist-sell pkg-mirror pkg-sell auto-accept
 
 LIB_DEPENDS=	libexpat.so:textproc/expat2
 
 USES=		cpe gmake libtool localbase perl5 ssl tar:tgz
 USE_PERL5=	build
 USE_LDCONFIG=	yes
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--enable-shared --with-zlib --with-ssl=${OPENSSLBASE}
 CPE_VENDOR=	w3c
 
+.include <bsd.port.options.mk>
+
+.if ${OPSYS} == FreeBSD && ${OSVERSION} >= 1400091
+CFLAGS+=	-Wno-error=incompatible-function-pointer-types
+.endif
+
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PREFIX}/lib/*.so
 
 .include <bsd.port.mk>