diff --git a/examples/napi/__test__/worker-thread.spec.ts b/examples/napi/__test__/worker-thread.spec.ts
index 1f2251f3..337fb5e8 100644
--- a/examples/napi/__test__/worker-thread.spec.ts
+++ b/examples/napi/__test__/worker-thread.spec.ts
@@ -3,13 +3,13 @@ import { Worker } from 'worker_threads'
 
 import test from 'ava'
 
-import { DEFAULT_COST } from '../index'
+import { DEFAULT_COST, Animal, Kind } from '../index'
 
 test('should be able to require in worker thread', (t) => {
   const w = new Worker(join(__dirname, 'worker.js'))
   return new Promise<void>((resolve) => {
     w.on('message', (msg) => {
-      t.is(msg, DEFAULT_COST)
+      t.is(msg, Animal.withKind(Kind.Cat).whoami() + DEFAULT_COST)
       resolve()
     })
   })
diff --git a/examples/napi/__test__/worker.js b/examples/napi/__test__/worker.js
index 84239acc..fee47128 100644
--- a/examples/napi/__test__/worker.js
+++ b/examples/napi/__test__/worker.js
@@ -2,4 +2,6 @@ const { parentPort } = require('worker_threads')
 
 const native = require('../index')
 
-parentPort.postMessage(native.DEFAULT_COST)
+parentPort.postMessage(
+  native.Animal.withKind(native.Kind.Cat).whoami() + native.DEFAULT_COST,
+)