diff --git a/windows/runner/main.cpp b/windows/runner/main.cpp
index 9f9d9f6..2cdd940 100644
--- a/windows/runner/main.cpp
+++ b/windows/runner/main.cpp
@@ -25,7 +25,7 @@ int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
   project.set_dart_entrypoint_arguments(std::move(command_line_arguments));
 
   FlutterWindow window(project);
-  Win32Window::Size size(1920, 1080);
+  Win32Window::Size size(720, 640);
   Win32Window::Point origin((GetSystemMetrics(SM_CXSCREEN) - size.width) / 2,
                             (GetSystemMetrics(SM_CYSCREEN) - size.height) / 2);
   if (!window.Create(L"simple_timer", origin, size)) {