diff --git a/misc/rump/Makefile b/misc/rump/Makefile
index 84884a90e77c..eaf99b332bf8 100644
--- a/misc/rump/Makefile
+++ b/misc/rump/Makefile
@@ -1,42 +1,46 @@
 PORTNAME=	rump
 PORTVERSION=	20170822
 PORTREVISION=	2
 CATEGORIES=	misc
 
 MAINTAINER=	vanilla@FreeBSD.org
 COMMENT=	Virtualized NetBSD kernel components in userspace
 WWW=		https://www.rumpkernel.org
 
 LICENSE=	BSD2CLAUSE
 
 ONLY_FOR_ARCHS=		aarch64 amd64 i386
 ONLY_FOR_ARCHS_REASON=	only supports FreeBSD on this architecture
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	rumpkernel
 GH_PROJECT=	buildrump.sh
 GH_TAGNAME=	b914579
 GH_TUPLE=	rumpkernel:src-netbsd:82f3a69:netbsd/src
 USE_LDCONFIG=	yes
 USES=		compiler
 
 .include <bsd.port.pre.mk>
 
+.if ${OPSYS} == FreeBSD && ( ${OSVERSION} >= 1400079 || ( ${OSVERSION} >= 1302505 && ${OSVERSION} < 1400000 ))
+CFLAGS+=	-Wno-error=strict-prototypes -Wno-error=array-parameter
+.endif
+
 .if ${ARCH} == amd64 || ${ARCH} == i386
 PLIST_SUB+=	X8664=""
 .else
 PLIST_SUB+=	X8664="@comment "
 .endif
 
 CWARNFLAGS+=	-Wno-address-of-packed-member
 .if ${COMPILER_TYPE} == clang && ${COMPILER_VERSION} >= 130
 CWARNFLAGS+=	-Wno-unused-but-set-variable
 .endif
 
 do-build:
 	cd ${WRKSRC}; ${SETENV} CC=${CC} AR=${AR} NM=${NM} OBJCOPY=${OBJCOPY} ./buildrump.sh -F CFLAGS="${CFLAGS}" -F CWARNFLAGS="${CWARNFLAGS}" -r fullbuild
 
 do-install:
 	cd ${WRKSRC}/rump; ${PAX} -wr lib include ${STAGEDIR}${PREFIX}/
 
 .include <bsd.port.post.mk>