diff --git a/articles/tutorials/building_2d_games/17_scenes/snippets/scene.cs b/articles/tutorials/building_2d_games/17_scenes/snippets/scene.cs
index b31698f0..3b4a50d6 100644
--- a/articles/tutorials/building_2d_games/17_scenes/snippets/scene.cs
+++ b/articles/tutorials/building_2d_games/17_scenes/snippets/scene.cs
@@ -112,6 +112,7 @@ protected virtual void Dispose(bool disposing)
             UnloadContent();
             Content.Dispose();
         }
+        IsDisposed = true; 
     }
     #endregion
 }