diff --git a/security/py-python-axolotl-curve25519/Makefile b/security/py-python-axolotl-curve25519/Makefile
index bba1857a8a05..be5753626fe8 100644
--- a/security/py-python-axolotl-curve25519/Makefile
+++ b/security/py-python-axolotl-curve25519/Makefile
@@ -1,20 +1,26 @@
 PORTNAME=		python-axolotl-curve25519
 PORTVERSION=		0.4.1
 DISTVERSIONSUFFIX=	.post2
 CATEGORIES=		security python
 MASTER_SITES=		PYPI
 PKGNAMEPREFIX=		${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	meka@tilda.center
 COMMENT=	Python wrapper for curve25519 with ed25519 signatures
 WWW=		https://github.com/tgalal/python-axolotl-curve25519
 
 LICENSE=	GPLv3
 
 USES=		python:3.6+
 USE_PYTHON=	autoplist distutils
 
+.include <bsd.port.pre.mk>
+
+.if ${OPSYS} == FreeBSD && ${OSVERSION} >= 1400079
+CFLAGS+=       -Wno-error=int-conversion
+.endif
+
 post-install:
 	${STRIP_CMD} ${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}/axolotl_curve25519*.so
 
-.include <bsd.port.mk>
+.include <bsd.port.post.mk>