diff --git a/math/eval/Makefile b/math/eval/Makefile
index dd2fec11fefd..1093e38904ea 100644
--- a/math/eval/Makefile
+++ b/math/eval/Makefile
@@ -1,26 +1,32 @@
 PORTNAME=	eval
 PORTVERSION=	113
 PORTREVISION=	2
 CATEGORIES=	math
 MASTER_SITES=	ftp://wuarchive.wustl.edu/pub/aminet/util/cli/ \
 		http://www.netsw.org/math/calc/ \
 		http://main.aminet.net/util/cli/
 DISTNAME=	Eval${PORTVERSION}
 EXTRACT_SUFX=	.lha
 
 MAINTAINER=	slaven@rezic.de
 COMMENT=	Full featured floating point expression evaluator
 
 USES=		lha readline
 
+WRKSRC=		${WRKDIR}/Eval/source
+
 PLIST_FILES=	bin/Eval
 
-WRKSRC=		${WRKDIR}/Eval/source
+.include <bsd.port.options.mk>
+
+.if ${OPSYS} == FreeBSD && ${OSVERSION} >= 1400091
+CFLAGS+=	-Wno-error=incompatible-function-pointer-types
+.endif
 
 post-extract:
 	-${LN} -s Makefile.unx ${WRKSRC}/Makefile
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/Eval ${STAGEDIR}${PREFIX}/bin
 
 .include <bsd.port.mk>