diff --git a/firefox/10-manual.yml b/firefox/10-manual.yml
index 85b4eb2..100695b 100644
--- a/firefox/10-manual.yml
+++ b/firefox/10-manual.yml
@@ -15,3 +15,8 @@ manual:
       type: domainname
       params:
         allow_ip: true
+
+    port:
+      description: HTTP Port
+      type: port
+      default: 8080