diff --git a/go/filer/flat_namespace/flat_namespace_filer.go b/go/filer/flat_namespace/flat_namespace_filer.go
index a0c484684..fb84781c0 100644
--- a/go/filer/flat_namespace/flat_namespace_filer.go
+++ b/go/filer/flat_namespace/flat_namespace_filer.go
@@ -6,7 +6,7 @@ import (
 	"github.com/chrislusf/weed-fs/go/filer"
 )
 
-type FlatNamesapceFiler struct {
+type FlatNamespaceFiler struct {
 	master string
 	store  FlatNamespaceStore
 }
@@ -15,36 +15,36 @@ var (
 	ErrNotImplemented = errors.New("Not Implemented for flat namespace meta data store")
 )
 
-func NewFlatNamesapceFiler(master string, store FlatNamespaceStore) *FlatNamesapceFiler {
-	return &FlatNamesapceFiler{
+func NewFlatNamespaceFiler(master string, store FlatNamespaceStore) *FlatNamespaceFiler {
+	return &FlatNamespaceFiler{
 		master: master,
 		store:  store,
 	}
 }
 
-func (filer *FlatNamesapceFiler) CreateFile(fullFileName string, fid string) (err error) {
+func (filer *FlatNamespaceFiler) CreateFile(fullFileName string, fid string) (err error) {
 	return filer.store.Put(fullFileName, fid)
 }
-func (filer *FlatNamesapceFiler) FindFile(fullFileName string) (fid string, err error) {
+func (filer *FlatNamespaceFiler) FindFile(fullFileName string) (fid string, err error) {
 	return filer.store.Get(fullFileName)
 }
-func (filer *FlatNamesapceFiler) FindDirectory(dirPath string) (dirId filer.DirectoryId, err error) {
+func (filer *FlatNamespaceFiler) FindDirectory(dirPath string) (dirId filer.DirectoryId, err error) {
 	return 0, ErrNotImplemented
 }
-func (filer *FlatNamesapceFiler) ListDirectories(dirPath string) (dirs []filer.DirectoryEntry, err error) {
+func (filer *FlatNamespaceFiler) ListDirectories(dirPath string) (dirs []filer.DirectoryEntry, err error) {
 	return nil, ErrNotImplemented
 }
-func (filer *FlatNamesapceFiler) ListFiles(dirPath string, lastFileName string, limit int) (files []filer.FileEntry, err error) {
+func (filer *FlatNamespaceFiler) ListFiles(dirPath string, lastFileName string, limit int) (files []filer.FileEntry, err error) {
 	return nil, ErrNotImplemented
 }
-func (filer *FlatNamesapceFiler) DeleteDirectory(dirPath string, recursive bool) (err error) {
+func (filer *FlatNamespaceFiler) DeleteDirectory(dirPath string, recursive bool) (err error) {
 	return ErrNotImplemented
 }
 
-func (filer *FlatNamesapceFiler) DeleteFile(fullFileName string) (fid string, err error) {
+func (filer *FlatNamespaceFiler) DeleteFile(fullFileName string) (fid string, err error) {
 	return filer.store.Delete(fullFileName)
 }
 
-func (filer *FlatNamesapceFiler) Move(fromPath string, toPath string) error {
+func (filer *FlatNamespaceFiler) Move(fromPath string, toPath string) error {
 	return ErrNotImplemented
 }
diff --git a/go/weed/weed_server/filer_server.go b/go/weed/weed_server/filer_server.go
index 8bb094208..6d07375fd 100644
--- a/go/weed/weed_server/filer_server.go
+++ b/go/weed/weed_server/filer_server.go
@@ -44,10 +44,10 @@ func NewFilerServer(r *http.ServeMux, port int, master string, dir string, colle
 		if err != nil {
 			glog.Fatalf("Can not connect to cassandra server %s with keyspace %s: %v", cassandra_server, cassandra_keyspace, err)
 		}
-		fs.filer = flat_namespace.NewFlatNamesapceFiler(master, cassandra_store)
+		fs.filer = flat_namespace.NewFlatNamespaceFiler(master, cassandra_store)
 	} else if redis_server != "" {
 		redis_store := redis_store.NewRedisStore(redis_server, redis_database)
-		fs.filer = flat_namespace.NewFlatNamesapceFiler(master, redis_store)
+		fs.filer = flat_namespace.NewFlatNamespaceFiler(master, redis_store)
 	} else {
 		if fs.filer, err = embedded_filer.NewFilerEmbedded(master, dir); err != nil {
 			glog.Fatalf("Can not start filer in dir %s : %v", dir, err)