diff --git a/Node/quickstarts/genkit-helloworld/functions/index.js b/Node/quickstarts/genkit-helloworld/functions/index.js
index f7420194b..ba7c369d3 100644
--- a/Node/quickstarts/genkit-helloworld/functions/index.js
+++ b/Node/quickstarts/genkit-helloworld/functions/index.js
@@ -46,7 +46,7 @@ const jokeTeller = ai.defineFlow({
   inputSchema: z.string().nullable(),
   outputSchema: z.string(),
   streamSchema: z.string(),
-}, async (jokeType = "knock-knock", response) => {
+}, async (jokeType = "knock-knock", {sendChunk}) => {
   const prompt = `Tell me a ${jokeType} joke.`;
 
   // Call the `generateStream()` method to
@@ -56,7 +56,7 @@ const jokeTeller = ai.defineFlow({
   // Send new words of the generative AI response
   // to the client as they are generated.
   for await (const chunk of stream) {
-    response.sendChunk(chunk.text);
+    sendChunk(chunk.text);
   }
 
   // Return the full generative AI response
@@ -74,7 +74,7 @@ exports.tellJoke = onCallGenkit({
   // [END bind-secrets]
   // [START auth-policy]
   // Protect your endpoint with authPolicy.
-  // authPolicy: (auth) => !!auth?.token.email_verified,
+  authPolicy: (auth) => !!auth?.token.email_verified,
   // [END auth-policy]
 },
 // Pass in the genkit flow.