diff --git a/samples/cachingfs/caching_fs_test.go b/samples/cachingfs/caching_fs_test.go
index 90aa803..9e5f659 100644
--- a/samples/cachingfs/caching_fs_test.go
+++ b/samples/cachingfs/caching_fs_test.go
@@ -201,6 +201,7 @@ func (t *BasicsTest) StatFoo() {
 	ExpectThat(fi.ModTime(), timeutil.TimeEq(t.initialMtime))
 	ExpectFalse(fi.IsDir())
 	ExpectEq(t.fs.FooID(), getInodeID(fi))
+	ExpectEq(1, fi.Sys().(*syscall.Stat_t).Nlink)
 }
 
 func (t *BasicsTest) StatDir() {
@@ -212,6 +213,7 @@ func (t *BasicsTest) StatDir() {
 	ExpectThat(fi.ModTime(), timeutil.TimeEq(t.initialMtime))
 	ExpectTrue(fi.IsDir())
 	ExpectEq(t.fs.DirID(), getInodeID(fi))
+	ExpectEq(1, fi.Sys().(*syscall.Stat_t).Nlink)
 }
 
 func (t *BasicsTest) StatBar() {
@@ -224,6 +226,7 @@ func (t *BasicsTest) StatBar() {
 	ExpectThat(fi.ModTime(), timeutil.TimeEq(t.initialMtime))
 	ExpectFalse(fi.IsDir())
 	ExpectEq(t.fs.BarID(), getInodeID(fi))
+	ExpectEq(1, fi.Sys().(*syscall.Stat_t).Nlink)
 }
 
 ////////////////////////////////////////////////////////////////////////
diff --git a/samples/hellofs/hello_fs_test.go b/samples/hellofs/hello_fs_test.go
index fc2629d..0b2ba04 100644
--- a/samples/hellofs/hello_fs_test.go
+++ b/samples/hellofs/hello_fs_test.go
@@ -21,6 +21,7 @@ import (
 	"os"
 	"path"
 	"strings"
+	"syscall"
 	"testing"
 	"time"
 
@@ -158,6 +159,7 @@ func (t *HelloFSTest) Stat_Hello() {
 	ExpectEq(0444, fi.Mode())
 	ExpectEq(0, t.clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
 	ExpectFalse(fi.IsDir())
+	ExpectEq(1, fi.Sys().(*syscall.Stat_t).Nlink)
 }
 
 func (t *HelloFSTest) Stat_Dir() {
@@ -169,6 +171,7 @@ func (t *HelloFSTest) Stat_Dir() {
 	ExpectEq(0555|os.ModeDir, fi.Mode())
 	ExpectEq(0, t.clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
 	ExpectTrue(fi.IsDir())
+	ExpectEq(1, fi.Sys().(*syscall.Stat_t).Nlink)
 }
 
 func (t *HelloFSTest) Stat_World() {
@@ -180,6 +183,7 @@ func (t *HelloFSTest) Stat_World() {
 	ExpectEq(0444, fi.Mode())
 	ExpectEq(0, t.clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
 	ExpectFalse(fi.IsDir())
+	ExpectEq(1, fi.Sys().(*syscall.Stat_t).Nlink)
 }
 
 func (t *HelloFSTest) Stat_NonExistent() {