diff --git a/main.cpp b/main.cpp
index 8cb828a..0c393b1 100755
--- a/main.cpp
+++ b/main.cpp
@@ -12,6 +12,7 @@ void mainL01() {
     Point p(10,10,'X');
     p.print();
 
+    Graphics::get().refreshScreen();
     std::this_thread::sleep_for(std::chrono::seconds(10));
 
     Graphics::get().finalize();