diff --git a/samples/hellofs/hello_fs.go b/samples/hellofs/hello_fs.go
index 6e933e0..7725ac0 100644
--- a/samples/hellofs/hello_fs.go
+++ b/samples/hellofs/hello_fs.go
@@ -35,10 +35,6 @@ import (
 type HelloFS struct {
 	fuseutil.NotImplementedFileSystem
 	Clock timeutil.Clock
-
-	// Set by Init.
-	Uid uint32
-	Gid uint32
 }
 
 var _ fuse.FileSystem = &HelloFS{}
@@ -65,7 +61,7 @@ var gInodeInfo = map[fuse.InodeID]inodeInfo{
 	// root
 	rootInode: inodeInfo{
 		attributes: fuse.InodeAttributes{
-			Mode: 0500 | os.ModeDir,
+			Mode: 0555 | os.ModeDir,
 		},
 		dir: true,
 		children: []fuseutil.Dirent{
@@ -87,7 +83,7 @@ var gInodeInfo = map[fuse.InodeID]inodeInfo{
 	// hello
 	helloInode: inodeInfo{
 		attributes: fuse.InodeAttributes{
-			Mode: 0400,
+			Mode: 0444,
 			Size: uint64(len("Hello, world!")),
 		},
 	},
@@ -95,7 +91,7 @@ var gInodeInfo = map[fuse.InodeID]inodeInfo{
 	// dir
 	dirInode: inodeInfo{
 		attributes: fuse.InodeAttributes{
-			Mode: 0500 | os.ModeDir,
+			Mode: 0555 | os.ModeDir,
 		},
 		dir: true,
 		children: []fuseutil.Dirent{
@@ -111,7 +107,7 @@ var gInodeInfo = map[fuse.InodeID]inodeInfo{
 	// world
 	worldInode: inodeInfo{
 		attributes: fuse.InodeAttributes{
-			Mode: 0400,
+			Mode: 0444,
 			Size: uint64(len("Hello, world!")),
 		},
 	},
@@ -134,8 +130,6 @@ func findChildInode(
 func (fs *HelloFS) patchAttributes(
 	attr *fuse.InodeAttributes) {
 	now := fs.Clock.Now()
-	attr.Uid = fs.Uid
-	attr.Gid = fs.Gid
 	attr.Atime = now
 	attr.Mtime = now
 	attr.Crtime = now
@@ -146,8 +140,6 @@ func (fs *HelloFS) Init(
 	req *fuse.InitRequest) (
 	resp *fuse.InitResponse, err error) {
 	resp = &fuse.InitResponse{}
-	fs.Uid = req.Header.Uid
-	fs.Gid = req.Header.Gid
 	return
 }
 
diff --git a/samples/hellofs/hello_fs_test.go b/samples/hellofs/hello_fs_test.go
index fe1df85..fc2629d 100644
--- a/samples/hellofs/hello_fs_test.go
+++ b/samples/hellofs/hello_fs_test.go
@@ -113,7 +113,7 @@ func (t *HelloFSTest) ReadDir_Root() {
 	fi = entries[0]
 	ExpectEq("dir", fi.Name())
 	ExpectEq(0, fi.Size())
-	ExpectEq(os.ModeDir|0500, fi.Mode())
+	ExpectEq(os.ModeDir|0555, fi.Mode())
 	ExpectEq(0, t.clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
 	ExpectTrue(fi.IsDir())
 
@@ -121,7 +121,7 @@ func (t *HelloFSTest) ReadDir_Root() {
 	fi = entries[1]
 	ExpectEq("hello", fi.Name())
 	ExpectEq(len("Hello, world!"), fi.Size())
-	ExpectEq(0400, fi.Mode())
+	ExpectEq(0444, fi.Mode())
 	ExpectEq(0, t.clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
 	ExpectFalse(fi.IsDir())
 }
@@ -137,7 +137,7 @@ func (t *HelloFSTest) ReadDir_Dir() {
 	fi = entries[0]
 	ExpectEq("world", fi.Name())
 	ExpectEq(len("Hello, world!"), fi.Size())
-	ExpectEq(0400, fi.Mode())
+	ExpectEq(0444, fi.Mode())
 	ExpectEq(0, t.clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
 	ExpectFalse(fi.IsDir())
 }
@@ -155,7 +155,7 @@ func (t *HelloFSTest) Stat_Hello() {
 
 	ExpectEq("hello", fi.Name())
 	ExpectEq(len("Hello, world!"), fi.Size())
-	ExpectEq(0400, fi.Mode())
+	ExpectEq(0444, fi.Mode())
 	ExpectEq(0, t.clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
 	ExpectFalse(fi.IsDir())
 }
@@ -166,7 +166,7 @@ func (t *HelloFSTest) Stat_Dir() {
 
 	ExpectEq("dir", fi.Name())
 	ExpectEq(0, fi.Size())
-	ExpectEq(0500|os.ModeDir, fi.Mode())
+	ExpectEq(0555|os.ModeDir, fi.Mode())
 	ExpectEq(0, t.clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
 	ExpectTrue(fi.IsDir())
 }
@@ -177,7 +177,7 @@ func (t *HelloFSTest) Stat_World() {
 
 	ExpectEq("world", fi.Name())
 	ExpectEq(len("Hello, world!"), fi.Size())
-	ExpectEq(0400, fi.Mode())
+	ExpectEq(0444, fi.Mode())
 	ExpectEq(0, t.clock.Now().Sub(fi.ModTime()), "ModTime: %v", fi.ModTime())
 	ExpectFalse(fi.IsDir())
 }