diff --git a/flutter/lib/mobile/pages/remote_page.dart b/flutter/lib/mobile/pages/remote_page.dart
index e8a888696..0072a2608 100644
--- a/flutter/lib/mobile/pages/remote_page.dart
+++ b/flutter/lib/mobile/pages/remote_page.dart
@@ -242,16 +242,16 @@ class _RemotePageState extends State<RemotePage> {
     }
   }
 
-  async void handleSoftKeyboardInput(String newValue) {
+  Future<void> handleSoftKeyboardInput(String newValue) async {
     if (isIOS) {
       // fix: TextFormField onChanged event triggered multiple times when Korean input
       // https://github.com/rustdesk/rustdesk/pull/9644
       await Future.delayed(const Duration(milliseconds: 10));
 
       if (newValue != _textController.text) return;
-      return _handleIOSSoftKeyboardInput(_textController.text);
+      _handleIOSSoftKeyboardInput(_textController.text);
     } else {
-      return _handleNonIOSSoftKeyboardInput(newValue);
+      _handleNonIOSSoftKeyboardInput(newValue);
     }
   }