diff --git a/devel/py-libzfs/Makefile b/devel/py-libzfs/Makefile
index 29954d37a846..b4487f2e0c57 100644
--- a/devel/py-libzfs/Makefile
+++ b/devel/py-libzfs/Makefile
@@ -1,29 +1,34 @@
 PORTNAME=	libzfs
 PORTVERSION=	1.1.2022071900
 CATEGORIES=	devel python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	freqlabs@FreeBSD.org
 COMMENT=	Python libzfs bindings
 
 LICENSE=	BSD2CLAUSE
+LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	truenas
 GH_PROJECT=	py-libzfs
 GH_TAGNAME=	18fc26c
 
 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 !exists(${SRC_BASE}/sys/Makefile)
-IGNORE=	requires kernel source files in ${SRC_BASE}
+IGNORE=		requires kernel source files in ${SRC_BASE}
+.endif
+
+.if ${OPSYS} == FreeBSD && ${OSVERSION} < 1301000
+BROKEN=		does not build on FreeBSD <13.1
 .endif
 
 .include <bsd.port.mk>