diff --git a/build.py b/build.py
index 56361ba0b..23a189869 100755
--- a/build.py
+++ b/build.py
@@ -252,7 +252,7 @@ def build_flutter_deb(version, features):
     os.system('mkdir -p tmpdeb/usr/share/rustdesk/files/systemd/')
     os.system('mkdir -p tmpdeb/usr/share/applications/')
     os.system('mkdir -p tmpdeb/usr/share/polkit-1/actions')
-    os.system('rm tmpdeb/usr/bin/rustdesk')
+    os.system('rm tmpdeb/usr/bin/rustdesk || true')
     os.system(
         'cp -r build/linux/x64/release/bundle/* tmpdeb/usr/lib/rustdesk/')
     os.system(
diff --git a/flutter/pubspec.yaml b/flutter/pubspec.yaml
index fee322b58..ddf5e8a53 100644
--- a/flutter/pubspec.yaml
+++ b/flutter/pubspec.yaml
@@ -63,7 +63,7 @@ dependencies:
     desktop_multi_window:
         git:
             url: https://github.com/Kingtous/rustdesk_desktop_multi_window
-            ref: 65a6acfdee49d6fc56c4c89ebb214d308543eb2b
+            ref: 82f9eab81cb2c7bfb938def7a1b399a6279bbc75
     freezed_annotation: ^2.0.3
     flutter_custom_cursor:
         git: