diff --git a/tests/fs/tmpfs/t_sizes.sh b/tests/fs/tmpfs/t_sizes.sh
index 9673b91ea135..b23881167c29 100644
--- a/tests/fs/tmpfs/t_sizes.sh
+++ b/tests/fs/tmpfs/t_sizes.sh
@@ -1,4 +1,4 @@
-# $NetBSD: t_sizes.sh,v 1.5 2010/11/07 17:51:18 jmmv Exp $
+# $NetBSD: t_sizes.sh,v 1.6 2018/01/17 00:23:17 maya Exp $
 #
 # Copyright (c) 2005, 2006, 2007, 2008 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -54,7 +54,7 @@ big_head() {
 big_body() {
 	test_mount -o -s10M
 
-	pagesize=$(sysctl hw.pagesize | cut -d ' ' -f 3)
+	pagesize=$(sysctl -n hw.pagesize)
 	eval $($(atf_get_srcdir)/h_tools statvfs . | sed -e 's|^f_|cf_|')
 	cf_bused=$((${cf_blocks} - ${cf_bfree}))
 
diff --git a/tests/fs/tmpfs/t_statvfs.sh b/tests/fs/tmpfs/t_statvfs.sh
index 21290b6239f9..b3d342078137 100644
--- a/tests/fs/tmpfs/t_statvfs.sh
+++ b/tests/fs/tmpfs/t_statvfs.sh
@@ -1,4 +1,4 @@
-# $NetBSD: t_statvfs.sh,v 1.4 2010/11/07 17:51:18 jmmv Exp $
+# $NetBSD: t_statvfs.sh,v 1.5 2018/01/17 00:23:17 maya Exp $
 #
 # Copyright (c) 2005, 2006, 2007 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -38,7 +38,7 @@ values_head() {
 values_body() {
 	test_mount -o -s10M
 
-	pagesize=$(sysctl hw.pagesize | cut -d ' ' -f 3)
+	pagesize=$(sysctl -n hw.pagesize)
 	eval $($(atf_get_srcdir)/h_tools statvfs .)
 	[ ${pagesize} -eq ${f_bsize} ] || \
 	    atf_fail "Invalid bsize"
diff --git a/tests/fs/tmpfs/t_vnode_leak.sh b/tests/fs/tmpfs/t_vnode_leak.sh
index c505ffdbaf9d..3f0dc5cc7c9e 100644
--- a/tests/fs/tmpfs/t_vnode_leak.sh
+++ b/tests/fs/tmpfs/t_vnode_leak.sh
@@ -1,4 +1,4 @@
-# $NetBSD: t_vnode_leak.sh,v 1.6 2010/11/07 17:51:18 jmmv Exp $
+# $NetBSD: t_vnode_leak.sh,v 1.7 2018/01/17 00:23:17 maya Exp $
 #
 # Copyright (c) 2005, 2006, 2007, 2008 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -36,7 +36,7 @@ main_head() {
 }
 main_body() {
 	echo "Lowering kern.maxvnodes to 2000"
-	sysctl kern.maxvnodes | awk '{ print $3; }' >oldvnodes
+	sysctl -n kern.maxvnodes >oldvnodes
 	atf_check -s eq:0 -o ignore -e empty sysctl -w kern.maxvnodes=2000
 
 	test_mount -o -s$(((4000 + 2) * 4096))