diff --git a/devel/py-libzfs/Makefile b/devel/py-libzfs/Makefile
index f68d645c2054..2db1495ec1c6 100644
--- a/devel/py-libzfs/Makefile
+++ b/devel/py-libzfs/Makefile
@@ -1,35 +1,35 @@
 PORTNAME=	libzfs
 PORTVERSION=	1.1.2023020700
 CATEGORIES=	devel python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	freqlabs@FreeBSD.org
 COMMENT=	Python libzfs bindings
 WWW=		https://github.com/freenas/py-libzfs
 
 LICENSE=	BSD2CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	truenas
 GH_PROJECT=	py-libzfs
 GH_TAGNAME=	c1bd4a0
 
 HAS_CONFIGURE=	yes
 USES=		compiler:c11 python
 USE_PYTHON=	autoplist distutils cython
 
 CONFIGURE_ENV=	freebsd_src=${SRC_BASE}
 MAKE_ENV=	freebsd_src=${SRC_BASE}
 
 .include <bsd.port.options.mk>
 
-.if ${OSVERSION} >= 1500000
+.if ${OPSYS} == FreeBSD && (${OSVERSION} >= 1500018 || (${OSVERSION} >= 1401000 && ${OSVERSION} < 1500000))
 EXTRA_PATCHES+=	${FILESDIR}/extra-zpool-add.patch
 .endif
 
 .if !exists(${SRC_BASE}/sys/Makefile)
 IGNORE=		requires kernel source files in ${SRC_BASE}
 .endif
 
 .include <bsd.port.mk>