diff --git a/README.md b/README.md
index 569936f8..1df8954e 100644
--- a/README.md
+++ b/README.md
@@ -123,6 +123,8 @@ This will open an empty file. Paste the following into it.
 ```
 allow_anonymous false
 password_file /etc/mosquitto/passwd
+listener 1883
+# ...
 ```
 Save and exit the text editor with "Ctrl+O", "Enter" and "Ctrl+X".