diff --git a/content/en/docs/demo/services/payment.md b/content/en/docs/demo/services/payment.md
index 3fbf0170c16d..1e102fcbf87c 100644
--- a/content/en/docs/demo/services/payment.md
+++ b/content/en/docs/demo/services/payment.md
@@ -81,6 +81,8 @@ const sdk = new opentelemetry.NodeSDK({
 });
 
 sdk.start();
+
+require('./index.js');
 ```
 
 You can then use `opentelemetry.js` to start your app. This can be done in the