diff --git a/flutter/lib/desktop/pages/install_page.dart b/flutter/lib/desktop/pages/install_page.dart
index 979364bbf..babf4401d 100644
--- a/flutter/lib/desktop/pages/install_page.dart
+++ b/flutter/lib/desktop/pages/install_page.dart
@@ -7,6 +7,7 @@ import 'package:flutter_hbb/desktop/widgets/tabbar_widget.dart';
 import 'package:flutter_hbb/models/platform_model.dart';
 import 'package:flutter_hbb/models/state_model.dart';
 import 'package:get/get.dart';
+import 'package:path/path.dart';
 import 'package:url_launcher/url_launcher_string.dart';
 import 'package:window_manager/window_manager.dart';
 
@@ -312,8 +313,7 @@ class _InstallPageBodyState extends State<_InstallPageBody>
     String? install_path = await FilePicker.platform
         .getDirectoryPath(initialDirectory: controller.text);
     if (install_path != null) {
-      install_path = '$install_path\\${await bind.mainGetAppName()}';
-      controller.text = install_path;
+      controller.text = join(install_path, await bind.mainGetAppName());
     }
   }
 }