diff --git a/meson.build b/meson.build
index 80ce1c4..10b19e6 100644
--- a/meson.build
+++ b/meson.build
@@ -49,3 +49,7 @@ executable('rvo_test', [
   ],
   override_options: exe_defaults,
   dependencies: dependencies)
+
+executable('constness', 'sfml-const/constness.cpp',
+  override_options: exe_defaults,
+  dependencies: dependencies)
diff --git a/sfml-const/constness.cpp b/sfml-const/constness.cpp
new file mode 100644
index 0000000..9d88955
--- /dev/null
+++ b/sfml-const/constness.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include "constness.hpp"
+
+using std::cout;
+
+void RenderTarget::draw(const Drawable& drawable) {
+  drawable.draw(*this);
+}
+
+void Shape::draw(const RenderTarget& target) const {
+  cout << "shape draw\n";
+}
+
+using std::cout;
+
+int main() {
+
+  RenderTarget target;
+  Shape shape;
+
+  target.draw(shape);
+
+  return 0;
+}
diff --git a/sfml-const/constness.hpp b/sfml-const/constness.hpp
new file mode 100644
index 0000000..2ced61c
--- /dev/null
+++ b/sfml-const/constness.hpp
@@ -0,0 +1,18 @@
+#pragma once
+
+class Drawable;
+
+class RenderTarget {
+  public:
+    void draw(const Drawable& drawable);
+};
+
+class Drawable {
+  public:
+    virtual void draw(const RenderTarget& target) const = 0;
+};
+
+class Shape : public Drawable {
+  public:
+  void draw(const RenderTarget& target) const override;
+};