diff --git a/test/app.e2e-spec.ts b/test/app.e2e-spec.ts
index e50e30e..adebb61 100644
--- a/test/app.e2e-spec.ts
+++ b/test/app.e2e-spec.ts
@@ -20,6 +20,6 @@ describe('AppController (e2e)', () => {
     return request(app.getHttpServer())
       .get('/')
       .expect(200)
-      .expect(res => res.headers['Content-Type'] == 'text/html');
+      .expect((res) => res.headers['Content-Type'] == 'text/html');
   });
 });