diff --git a/sample-lnd.conf b/sample-lnd.conf
index 582b9760..2bac475b 100644
--- a/sample-lnd.conf
+++ b/sample-lnd.conf
@@ -67,8 +67,10 @@
 
 ; Adding an external IP will advertise your node to the network. This signals
 ; that your node is available to accept incoming channels. If you don't wish to
-; advertise your node, this value doesn't need to be set.
-; externalip=            
+; advertise your node, this value doesn't need to be set. Unless specified
+; (with host:port notation), the default port (9735) will be added to the
+; address.
+; externalip=
 
 
 ; Debug logging level.