diff --git a/packages/testing/src/test-server.ts b/packages/testing/src/test-server.ts
index 3aeac1373d..8f90a7263a 100644
--- a/packages/testing/src/test-server.ts
+++ b/packages/testing/src/test-server.ts
@@ -120,7 +120,7 @@ export class TestServer {
             const usingCookie =
                 tokenMethod === 'cookie' || (Array.isArray(tokenMethod) && tokenMethod.includes('cookie'));
             if (usingCookie) {
-                configureSessionCookies(config);
+                configureSessionCookies(app, config);
             }
             const earlyMiddlewares = config.apiOptions.middleware.filter(mid => mid.beforeListen);
             earlyMiddlewares.forEach(mid => {