diff --git a/docs/tutorials/setup-opentelemetry.md b/docs/tutorials/setup-opentelemetry.md
index 30dde79db8..faaeab49f4 100644
--- a/docs/tutorials/setup-opentelemetry.md
+++ b/docs/tutorials/setup-opentelemetry.md
@@ -33,6 +33,7 @@ const {
 } = require('@opentelemetry/auto-instrumentations-node');
 const { PrometheusExporter } = require('@opentelemetry/exporter-prometheus');
 
+// By default exports the metrics on localhost:9464/metrics
 const prometheus = new PrometheusExporter();
 const sdk = new NodeSDK({
   // You can add a traceExporter field here too