diff --git a/base/Entrypoints.h b/base/Entrypoints.h
index 24b8d533..bd283810 100644
--- a/base/Entrypoints.h
+++ b/base/Entrypoints.h
@@ -22,7 +22,7 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 	}																								\
 	return (DefWindowProc(hWnd, uMsg, wParam, lParam));												\
 }																									\
-int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int)									\
+int APIENTRY WinMain(_In_ HINSTANCE hInstance, _In_opt_  HINSTANCE hPrevInstance, _In_ LPSTR, _In_ int) \
 {																									\
 	for (int32_t i = 0; i < __argc; i++) { VulkanExample::args.push_back(__argv[i]); };  			\
 	vulkanExample = new VulkanExample();															\