diff --git a/examples/custom-renderer/Game.zig b/examples/custom-renderer/Game.zig
index d0179746..350cf020 100644
--- a/examples/custom-renderer/Game.zig
+++ b/examples/custom-renderer/Game.zig
@@ -108,7 +108,7 @@ fn tick(
                     else => {},
                 }
             },
-            .close => engine.send(.exit, .{}),
+            .close => engine.send(.exit, .{}), // Send an event telling the engine to exit the app
             else => {},
         }
     }