diff --git a/net/libdnet/files/patch-configure.ac b/net/libdnet/files/patch-configure.ac
index 6a812f27b63d..b3bfe2f2cedc 100644
--- a/net/libdnet/files/patch-configure.ac
+++ b/net/libdnet/files/patch-configure.ac
@@ -1,43 +1,43 @@
 Do not invasively check for BPF (Ethernet check queries presence
 of /dev/bpfX): we know that FreeBSD has BPF and ports can be *built*
 inside infrastructure that has no such /dev entries; like a jail
 without devfs configured to unhide BPF devices.
 
 The presence of the net/bpf.h is checked in configure earlier,
 so sanity checks for the build environment will still be present.
 
 Macro HAVE_BSD_BPF won't be defined after this modification,
 but as of libdnet-1.13 it is not used at all inside libdnet's code.
 
 FreeBSD PR: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238523
 Origin: rea@FreeBSD.org
---- configure.ac.old	2019-06-30 21:36:25.906488000 +0300
-+++ configure.ac	2019-06-30 21:39:21.116185000 +0300
-@@ -203,7 +203,6 @@
+--- configure.ac.orig	2019-03-19 17:55:02 UTC
++++ configure.ac
+@@ -203,7 +203,6 @@ AC_CHECK_FUNCS([gethostbyname gettimeofday memmove mem
  AC_REPLACE_FUNCS(err strlcat strlcpy strsep)
  
  dnl Checks for other system-specific jonks.
 -AC_DNET_BSD_BPF
  AC_DNET_RAWIP_HOST_OFFLEN
  
  dnl Check for arp interface.
-@@ -219,18 +218,7 @@
+@@ -219,18 +218,7 @@ else
  	(exit 1); exit 1;
  fi
  
 -dnl Check for Ethernet interface.
 -if test "$ac_cv_dnet_bsd_bpf" = yes ; then
 -	AC_LIBOBJ([eth])
 -else
 -	echo "|------------------------------------------|"
 -	echo "|No suitable Ethernet interface found. Most|"
 -	echo "|probably you are not running the FreeBSD  |"
 -	echo "|OS. Please consider using this version    |"
 -	echo "|of libdnet  with the FreeBSD system       |"
 -	echo "|------------------------------------------|"
 -	(exit 1); exit 1;
 -fi
 +AC_LIBOBJ([eth])
  
  dnl Check for firewall interface.
  if test "$ac_cv_header_net_pfvar_h" = yes ; then
diff --git a/net/py-libdnet/Makefile b/net/py-libdnet/Makefile
index 37c5095de6d2..2742a942c570 100644
--- a/net/py-libdnet/Makefile
+++ b/net/py-libdnet/Makefile
@@ -1,38 +1,44 @@
 PORTREVISION=	4
 CATEGORIES=	net python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 COMMENT=	Python module for libdnet
 
 LIB_DEPENDS=	libdnet.so:net/libdnet
 
 USES=		autoreconf libtool python:3.6+
 
 MASTERDIR=	${.CURDIR}/../libdnet
 INSTALL_WRKSRC=	${WRKSRC}/python
 DESCR=		${.CURDIR}/pkg-descr
 PLIST=		${NONEXISTENT}
 PLIST_FILES=	${PYTHON_SITELIBDIR}/dnet%%PYTHON_EXT_SUFFIX%%.so \
 		${PYTHON_SITELIBDIR}/dnet-${PORTVERSION}-py${PYTHON_VER}.egg-info/PKG-INFO \
 		${PYTHON_SITELIBDIR}/dnet-${PORTVERSION}-py${PYTHON_VER}.egg-info/SOURCES.txt \
 		${PYTHON_SITELIBDIR}/dnet-${PORTVERSION}-py${PYTHON_VER}.egg-info/dependency_links.txt \
 		${PYTHON_SITELIBDIR}/dnet-${PORTVERSION}-py${PYTHON_VER}.egg-info/top_level.txt
 
 LIBDNET_SLAVE=	yes
 
 USE_PYTHON=	cython flavors
 CONFIGURE_ARGS=	--with-python=${PYTHON_CMD}
 
 .if defined(MAINTAINER_MODE)
 regression-test: install
 	${PYTHON_CMD} ${INSTALL_WRKSRC}/test.py
 .endif
 
+.include <bsd.port.options.mk>
+
+.if ${OPSYS} == FreeBSD && ${OSVERSION} >= 1400091
+CFLAGS+=	-Wno-error=incompatible-function-pointer-types
+.endif
+
 post-patch:
 	${REINPLACE_CMD} 's|%%CYTHON%%|cython-${PYTHON_VER}|g' \
 		${WRKSRC}/python/Makefile.am
 
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}/dnet*.so
 
 .include "${MASTERDIR}/Makefile"