diff --git a/cmd/objbench.go b/cmd/objbench.go
index 39913f9cd543..f150ccb4d14b 100644
--- a/cmd/objbench.go
+++ b/cmd/objbench.go
@@ -893,7 +893,7 @@ func functionalTesting(blob object.ObjectStorage, result *[][]string, colorful b
 	})
 
 	runCase("special key", func(blob object.ObjectStorage) error {
-		key := "测试编码文件" + `{"name":"juicefs"}` + string('\u001F')
+		key := "测试编码文件" + `{"name":"juicefs"}` + string('\u001F') + "%uFF081%uFF09.jpg"
 		defer blob.Delete(key) //nolint:errcheck
 		if err := blob.Put(key, bytes.NewReader([]byte("1"))); err != nil {
 			return fmt.Errorf("put encode file failed: %s", err)
diff --git a/pkg/object/object_storage_test.go b/pkg/object/object_storage_test.go
index f5d056101fdf..f26b8c86d4b9 100644
--- a/pkg/object/object_storage_test.go
+++ b/pkg/object/object_storage_test.go
@@ -126,7 +126,7 @@ func testStorage(t *testing.T, s ObjectStorage) {
 		}
 	}()
 
-	key := "测试编码文件" + `{"name":"zhijian"}` + string('\u001F')
+	key := "测试编码文件" + `{"name":"juicefs"}` + string('\u001F') + "%uFF081%uFF09.jpg"
 	if err := s.Put(key, bytes.NewReader(nil)); err != nil {
 		t.Logf("PUT testEncodeFile failed: %s", err.Error())
 	} else {