diff --git a/internal/model/obj.go b/internal/model/obj.go
index 1314c286c7b..346f300d951 100644
--- a/internal/model/obj.go
+++ b/internal/model/obj.go
@@ -26,3 +26,7 @@ type URL interface {
 type Thumbnail interface {
 	Thumbnail() string
 }
+
+type SetID interface {
+	SetID(id string)
+}
diff --git a/internal/model/object.go b/internal/model/object.go
index 463d21a4f61..b8124fe8153 100644
--- a/internal/model/object.go
+++ b/internal/model/object.go
@@ -29,3 +29,7 @@ func (f Object) IsDir() bool {
 func (f Object) GetID() string {
 	return f.ID
 }
+
+func (f *Object) SetID(id string) {
+	f.ID = id
+}
diff --git a/internal/operations/fs.go b/internal/operations/fs.go
index 4a2466bf660..d3ccf01edcc 100644
--- a/internal/operations/fs.go
+++ b/internal/operations/fs.go
@@ -44,8 +44,7 @@ func List(ctx context.Context, account driver.Driver, path string) ([]model.Obj,
 	return files, err
 }
 
-// Get get object from list of files
-// TODO: maybe should set object ID with path here
+// Get object from list of files
 func Get(ctx context.Context, account driver.Driver, path string) (model.Obj, error) {
 	// is root folder
 	if r, ok := account.GetAddition().(driver.IRootFolderId); ok && utils.PathEqual(path, "/") {
@@ -74,6 +73,13 @@ func Get(ctx context.Context, account driver.Driver, path string) (model.Obj, er
 	}
 	for _, f := range files {
 		if f.GetName() == name {
+			// use path as id, why don't set id in List function?
+			// because files maybe cache, set id here can reduce memory usage
+			if f.GetID() == "" {
+				if s, ok := f.(model.SetID); ok {
+					s.SetID(path)
+				}
+			}
 			return f, nil
 		}
 	}