diff --git a/firefox/10-manual.yml b/firefox/10-manual.yml
index 44560e6..b71f9ce 100644
--- a/firefox/10-manual.yml
+++ b/firefox/10-manual.yml
@@ -6,3 +6,6 @@ manual:
   http_proxy:
     description: HTTP Proxy
     type: family
+
+    address:
+      description: HTTP address