diff --git a/firefox/20-manual.yml b/firefox/20-manual.yml
index 63e9f4a..b167f70 100644
--- a/firefox/20-manual.yml
+++ b/firefox/20-manual.yml
@@ -22,12 +22,12 @@ manual:
     address:
       description: "{{ identifier }} address"
       default:
-        variable: manual.http_proxy.address
+        variable: __.http_proxy.address
 
     port:
       description: "{{ identifier }} port"
       default:
-        variable: manual.http_proxy.port
+        variable: __.http_proxy.port
 
     version:
       description: SOCKS host version used by proxy