diff --git a/crates/masonry/examples/hello.rs b/crates/masonry/examples/hello.rs
index 939846bc2..648b1c1c7 100644
--- a/crates/masonry/examples/hello.rs
+++ b/crates/masonry/examples/hello.rs
@@ -27,7 +27,9 @@ impl AppDriver for Driver {
             Action::ButtonPressed => {
                 println!("Hello");
             }
-            _ => {}
+            action => {
+                eprintln!("Unexpected action {action:?}")
+            }
         }
     }
 }