diff --git a/cmd/zpool/zpool_main.c b/cmd/zpool/zpool_main.c
index 6d9ff24e0..95d0c279a 100644
--- a/cmd/zpool/zpool_main.c
+++ b/cmd/zpool/zpool_main.c
@@ -421,7 +421,8 @@ get_usage(zpool_help_t idx)
 		return (gettext("\tget [-Hp] [-o \"all\" | field[,...]] "
 		    "<\"all\" | property[,...]> <pool> ...\n"));
 	case HELP_SET:
-		return (gettext("\tset <property=value> <pool> \n"));
+		return (gettext("\tset <property=value> <pool>\n"
+		    "\tset <vdev_property=value> <pool> <vdev>\n"));
 	case HELP_SPLIT:
 		return (gettext("\tsplit [-gLnPl] [-R altroot] [-o mntopts]\n"
 		    "\t    [-o property=value] <pool> <newpool> "