diff --git a/source/_addons/mosquitto.markdown b/source/_addons/mosquitto.markdown
index a99487c1f92..5512542ed20 100644
--- a/source/_addons/mosquitto.markdown
+++ b/source/_addons/mosquitto.markdown
@@ -50,3 +50,12 @@ To use the Mosquitto as [broker](/docs/mqtt/broker/#run-your-own) add the follow
 mqtt:
   broker: core-mosquitto
 ```
+
+If username and password are set up in add-on, your `configuration.yaml` file should contain that data.
+
+```yaml
+mqtt:
+  broker: core-mosquitto
+  username: YOUR_USERNAME
+  password: YOUR_PASSWORD
+```