diff --git a/test/typescript-jest/integration/instance.ts b/test/typescript-jest/integration/instance.ts
index 1b3e603e..00dfdebf 100644
--- a/test/typescript-jest/integration/instance.ts
+++ b/test/typescript-jest/integration/instance.ts
@@ -4,8 +4,10 @@ import basicApp from "../../typescript/basic/app";
 const app = fastify();
 app.register(basicApp);
 
-app.listen(Math.floor(Math.random() * 3000 + 3000), function (err) {
-  if (err) console.error("failed");
-  console.log("success");
+app.listen({
+  port: Math.floor(Math.random() * 3000 + 3000)
+}, function (err) {
+  if (err) process.stderr.write("failed");
+  process.stdout.write("success");
   app.close();
 });
diff --git a/test/typescript-jest/integration/integration.test.ts b/test/typescript-jest/integration/integration.test.ts
index 7d656fac..20b257d6 100644
--- a/test/typescript-jest/integration/integration.test.ts
+++ b/test/typescript-jest/integration/integration.test.ts
@@ -4,14 +4,14 @@ describe("integration test", function () {
   test.concurrent.each(["ts-node", "ts-node-dev"])(
     "integration with %s",
     async function (instance) {
-      await new Promise(function (resolve) {
-        const child = exec(`${instance} ${process.cwd()}/test/typescript-jest/integration/instance.ts`);
+      await new Promise(function (resolve, reject) {
+        const child = exec(`${instance} "${process.cwd()}/test/typescript-jest/integration/instance.ts"`);
         let stderr = "";
-        child.stderr.on("data", function (b) {
+        child.stderr?.on("data", function (b) {
           stderr = stderr + b.toString();
         });
         let stdout = "";
-        child.stdout.on("data", function (b) {
+        child.stdout?.on("data", function (b) {
           stdout = stdout + b.toString();
         });
         child.once("close", function () {