diff --git a/sysutils/zfstools/Makefile b/sysutils/zfstools/Makefile
index 51aba8484537..39f068757b24 100644
--- a/sysutils/zfstools/Makefile
+++ b/sysutils/zfstools/Makefile
@@ -1,37 +1,38 @@
 # $FreeBSD$
 
 PORTNAME=	zfstools
 PORTVERSION=	0.3.1
+PORTREVSIION=	1
 CATEGORIES=	sysutils ruby
 MASTER_SITES=	GH \
 		http://mirror.shatow.net/freebsd/${PORTNAME}/
 
 MAINTAINER=	bdrewery@FreeBSD.org
 COMMENT=	OpenSolaris-compatible auto snapshotting for ZFS
 
 LICENSE=	BSD
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	bdrewery
 GH_COMMIT=	24d02f9
 GH_TAGNAME=	v${DISTVERSION}
 
 USE_RUBY=	yes
 NO_BUILD=	yes
 
 SUB_FILES=	pkg-message
 
 OPTIONS_DEFINE=	DOCS
 
 .include <bsd.port.options.mk>
 
 do-install:
 	@cd ${WRKSRC}/bin && ${COPYTREE_BIN} . ${STAGEDIR}${PREFIX}/sbin
 	@cd ${WRKSRC}/lib && ${COPYTREE_SHARE} . ${STAGEDIR}${RUBY_SITELIBDIR}
 .if ${PORT_OPTIONS:MDOCS}
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	@${INSTALL_DATA} ${WRKSRC}/README.md ${STAGEDIR}${DOCSDIR}
 .endif
 
 .include <bsd.port.mk>
diff --git a/sysutils/zfstools/files/pkg-message.in b/sysutils/zfstools/files/pkg-message.in
index eb90c0038663..122d1af16cd5 100644
--- a/sysutils/zfstools/files/pkg-message.in
+++ b/sysutils/zfstools/files/pkg-message.in
@@ -1,18 +1,26 @@
 To enable automatic snapshots, place lines such as these into /etc/crontab:
 
     PATH=/etc:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin
     15,30,45 * * * * root %%PREFIX%%/sbin/zfs-auto-snapshot frequent  4
     0        * * * * root %%PREFIX%%/sbin/zfs-auto-snapshot hourly   24
     7        0 * * * root %%PREFIX%%/sbin/zfs-auto-snapshot daily     7
     14       0 * * 7 root %%PREFIX%%/sbin/zfs-auto-snapshot weekly    4
     28       0 1 * * root %%PREFIX%%/sbin/zfs-auto-snapshot monthly  12
 
 This will keep 4 15-minutely snapshots, 24 hourly snapshots, 7 daily snapshots,
 4 weekly snapshots and 12 monthly snapshots. Any resulting zero-sized snapshots
 will be automatically cleaned up.
 
 Enable snapshotting on a dataset or top-level pool with:
 
     zfs set com.sun:auto-snapshot=true DATASET
 
+Children datasets can be disabled for snapshot with:
+
+    zfs set com.sun:auto-snapshot=false DATASET
+
+Or for specific intervals:
+
+    zfs set com.sun:auto-snapshot:frequent=false DATASET
+
 See website and command usage output for further details.