diff --git a/docs/widgets/services/opnsense.md b/docs/widgets/services/opnsense.md
index faaba6b8477..eb6c7c1c026 100644
--- a/docs/widgets/services/opnsense.md
+++ b/docs/widgets/services/opnsense.md
@@ -20,4 +20,5 @@ widget:
   url: http://opnsense.host.or.ip
   username: key
   password: secret
+  wan: opt1 # optional, defaults to wan
 ```