diff --git a/utils/wasm-builder/tests/smoke.rs b/utils/wasm-builder/tests/smoke.rs
index 40d82462945..f80205130d1 100644
--- a/utils/wasm-builder/tests/smoke.rs
+++ b/utils/wasm-builder/tests/smoke.rs
@@ -149,4 +149,5 @@ fn features_tracking() {
     assert!(read_export_entry("handle_signal").is_none());
     CargoRunner::new().args(["build", "--features=b"]).run();
     assert!(read_export_entry("handle_signal").is_some());
+    assert!(read_export_entry("handle_reply").is_none());
 }