diff --git a/shell/platform/windows/fixtures/main.dart b/shell/platform/windows/fixtures/main.dart
index 66fa68d2d3052..9daf3a8292a97 100644
--- a/shell/platform/windows/fixtures/main.dart
+++ b/shell/platform/windows/fixtures/main.dart
@@ -32,7 +32,6 @@ void hiPlatformChannels() {
       ui.PlatformDispatcher.instance
           .sendPlatformMessage('hi', reply, (ByteData? reply) {});
     });
-    callback(null);
   });
 }