diff --git a/firefox/20-manual.yml b/firefox/20-manual.yml
index 442fb2d..c12ed3f 100644
--- a/firefox/20-manual.yml
+++ b/firefox/20-manual.yml
@@ -10,12 +10,11 @@ manual:
 
     address:
       description: HTTPS address
-      type: domainname
-      params:
-        allow_ip: true
+      default:
+        variable: __.http_proxy.address
 
     port:
       description: HTTPS Port
-      type: port
-      default: 8080
+      default:
+        variable: __.http_proxy.port
 ...