diff --git a/core/amazon/awssdk/listobjects_v2.go b/core/amazon/awssdk/listobjects_v2.go
index 81e5fb7..ac05147 100644
--- a/core/amazon/awssdk/listobjects_v2.go
+++ b/core/amazon/awssdk/listobjects_v2.go
@@ -23,7 +23,7 @@ type Item struct {
 	Size int64  `xml:"Size"`
 }
 
-func ListObjectsV2(w http.ResponseWriter, r *http.Request) {
+func ListObjectsV2(w http.ResponseWriter, r *http.Request, uploadDirName string) {
 	slog.Info("ListObjectsV2 is called.")
 
 	path := strings.Split(r.URL.Path, "?list-type=2")[0] // It has been confirmed in the previous process controller.go that `?list-type=2` is included.
@@ -34,9 +34,9 @@ func ListObjectsV2(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	rootDir := filepath.Join("upload", dir)
+	rootDir := filepath.Join(uploadDirName, dir)
 
-	items, err := ListObjects(rootDir)
+	items, err := ListObjects(rootDir, uploadDirName)
 	if err != nil {
 		slog.Error("Failed to list objects", "error", err)
 		http.Error(w, "Failed to list objects", http.StatusInternalServerError)
@@ -60,7 +60,7 @@ func ListObjectsV2(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func ListObjects(rootDir string) ([]Item, error) {
+func ListObjects(rootDir string, uploadDirName string) ([]Item, error) {
 	var items []Item
 	err := filepath.Walk(rootDir, func(path string, info os.FileInfo, err error) error {
 		if err != nil {
@@ -68,7 +68,7 @@ func ListObjects(rootDir string) ([]Item, error) {
 		}
 		if !info.IsDir() {
 			items = append(items, Item{
-				Key:  filepath.ToSlash(path[len("upload/"):]),
+				Key:  filepath.ToSlash(path[len(uploadDirName+"/"):]),
 				Size: info.Size(),
 			})
 		}
diff --git a/core/amazon/awssdk/listobjects_v2_test.go b/core/amazon/awssdk/listobjects_v2_test.go
index 84b8097..bb3ab64 100644
--- a/core/amazon/awssdk/listobjects_v2_test.go
+++ b/core/amazon/awssdk/listobjects_v2_test.go
@@ -1,11 +1,63 @@
 package awssdk
 
 import (
+	"os"
+	"path/filepath"
 	"testing"
 
 	"github.com/go-playground/assert/v2"
 )
 
+func TestListObjects(t *testing.T) {
+	// Create a temporary directory for testing
+	tempDir := "test-upload"
+	err := os.Mkdir(tempDir, 0777)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(tempDir)
+
+	// Create test files and directories
+	err = os.MkdirAll(filepath.Join(tempDir, "dir1"), os.ModePerm)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = os.WriteFile(filepath.Join(tempDir, "file1.txt"), []byte("file1 content"), os.ModePerm)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = os.WriteFile(filepath.Join(tempDir, "dir1", "file2.txt"), []byte("file2 content"), os.ModePerm)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Call the ListObjects function
+	items, err := ListObjects(filepath.Join(tempDir), "test-upload")
+	if err != nil {
+		t.Fatalf("ListObjects returned an error: %v", err)
+	}
+
+	// Define expected results
+	expectedItems := []Item{
+		{Key: "dir1/file2.txt", Size: int64(len("file2 content"))},
+		{Key: "file1.txt", Size: int64(len("file1 content"))},
+	}
+
+	// Check the number of items
+	if len(items) != len(expectedItems) {
+		t.Fatalf("Expected %d items, got %d", len(expectedItems), len(items))
+	}
+
+	// Check each item
+	for i, item := range items {
+		if item.Key != expectedItems[i].Key || item.Size != expectedItems[i].Size {
+			t.Errorf("Expected item %v, got %v", expectedItems[i], item)
+		}
+	}
+}
+
 func TestIsTruncated(t *testing.T) {
 	items1 := make([]Item, 1)
 	items999 := make([]Item, 999)
diff --git a/web/constant.go b/web/constant.go
index bc400f6..27964bc 100644
--- a/web/constant.go
+++ b/web/constant.go
@@ -1,5 +1,6 @@
 package web
 
 const (
-	UPLOAD_DIR = "./upload"
+	UPLOAD_DIR_PATH = "./upload"
+	UPLOAD_DIR_NAME = "upload"
 )
diff --git a/web/controller.go b/web/controller.go
index 86b3f16..2bc66bf 100644
--- a/web/controller.go
+++ b/web/controller.go
@@ -27,7 +27,7 @@ func CliSdkHandler(w http.ResponseWriter, r *http.Request) {
 	if strings.Contains(userAgent, "aws-sdk") {
 		if r.Method == "GET" {
 			if r.URL.Query().Get("list-type") == "2" {
-				awssdk.ListObjectsV2(w, r)
+				awssdk.ListObjectsV2(w, r, UPLOAD_DIR_NAME)
 			} else {
 				awssdk.Get(w, r)
 			}
diff --git a/web/dir_controller.go b/web/dir_controller.go
index 6c42db2..6b7ff75 100644
--- a/web/dir_controller.go
+++ b/web/dir_controller.go
@@ -15,7 +15,7 @@ func MkdirHandler(w http.ResponseWriter, r *http.Request) {
 
 	currentPath := r.FormValue("currentPath")
 	dirname := r.FormValue("dirname")
-	dir := filepath.Join(UPLOAD_DIR, currentPath, dirname)
+	dir := filepath.Join(UPLOAD_DIR_PATH, currentPath, dirname)
 	err := os.Mkdir(dir, os.ModePerm)
 	if err != nil {
 		slog.Error("failed to mkdir", "target directory", dir, "error", err)
@@ -34,7 +34,7 @@ func RmdirHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	dirname := r.FormValue("dirname")
-	err := os.Remove(filepath.Join(UPLOAD_DIR, dirname))
+	err := os.Remove(filepath.Join(UPLOAD_DIR_PATH, dirname))
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
diff --git a/web/rename_controller.go b/web/rename_controller.go
index 63e48a5..8f1ea76 100644
--- a/web/rename_controller.go
+++ b/web/rename_controller.go
@@ -14,7 +14,7 @@ func RenameHandler(w http.ResponseWriter, r *http.Request) {
 
 	oldFilename := r.FormValue("oldFilename")
 	newFilename := r.FormValue("newFilename")
-	err := os.Rename(filepath.Join(UPLOAD_DIR, oldFilename), filepath.Join(UPLOAD_DIR, newFilename))
+	err := os.Rename(filepath.Join(UPLOAD_DIR_PATH, oldFilename), filepath.Join(UPLOAD_DIR_PATH, newFilename))
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
@@ -31,7 +31,7 @@ func RenamedirHandler(w http.ResponseWriter, r *http.Request) {
 
 	oldDirname := r.FormValue("oldDirname")
 	newDirname := r.FormValue("newDirname")
-	err := os.Rename(filepath.Join(UPLOAD_DIR, oldDirname), filepath.Join(UPLOAD_DIR, newDirname))
+	err := os.Rename(filepath.Join(UPLOAD_DIR_PATH, oldDirname), filepath.Join(UPLOAD_DIR_PATH, newDirname))
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
diff --git a/web/rm_controller.go b/web/rm_controller.go
index efcc9a8..efeaf87 100644
--- a/web/rm_controller.go
+++ b/web/rm_controller.go
@@ -16,7 +16,7 @@ func RemoveHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	path := r.FormValue("path")[len("/s3/"):]
-	err := os.Remove(filepath.Join(UPLOAD_DIR, path))
+	err := os.Remove(filepath.Join(UPLOAD_DIR_PATH, path))
 	if err != nil {
 		slog.Error("Failed to remove.", "error", err, "path", path)
 		http.Error(w, err.Error(), http.StatusInternalServerError)
diff --git a/web/s3_controller.go b/web/s3_controller.go
index 4241034..fe59487 100644
--- a/web/s3_controller.go
+++ b/web/s3_controller.go
@@ -16,7 +16,7 @@ func S3Handler(w http.ResponseWriter, r *http.Request) {
 	slog.Info("S3Handler is called.")
 	path := r.URL.Path[len("/s3/"):]
 
-	s3Objects, err := util.GenerateS3Objects(r, UPLOAD_DIR, GetDirPath(path))
+	s3Objects, err := util.GenerateS3Objects(r, UPLOAD_DIR_PATH, GetDirPath(path))
 	if err != nil {
 		slog.Error("GenerateS3Objects error", "error", err)
 		http.Error(w, err.Error(), http.StatusInternalServerError)
@@ -59,7 +59,7 @@ func S3Handler(w http.ResponseWriter, r *http.Request) {
 func download(w http.ResponseWriter, path string) (n int64, httpStatus int, err error) {
 	slog.Info("Start downloading file", "path", path)
 
-	file, err := os.Open(filepath.Join(UPLOAD_DIR, path))
+	file, err := os.Open(filepath.Join(UPLOAD_DIR_PATH, path))
 	if err != nil {
 		slog.Error("File open error", "error", err)
 		return 0, http.StatusNotFound, err
diff --git a/web/upload_controller.go b/web/upload_controller.go
index e33a16a..93e58b0 100644
--- a/web/upload_controller.go
+++ b/web/upload_controller.go
@@ -37,7 +37,7 @@ func UploadHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	defer file.Close()
 
-	dst, err := os.Create(filepath.Join(UPLOAD_DIR, path, header.Filename))
+	dst, err := os.Create(filepath.Join(UPLOAD_DIR_PATH, path, header.Filename))
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return