diff --git a/firefox/20-manual.yml b/firefox/20-manual.yml
index cb802450..3735fdb6 100644
--- a/firefox/20-manual.yml
+++ b/firefox/20-manual.yml
@@ -34,6 +34,9 @@ manual:
       redefine: true
       description: SOCKS proxy port
       default: 1080
+      disabled:
+        variable: _.address
+        when: null
 
     version:
       description: SOCKS host version used by proxy
@@ -41,4 +44,7 @@ manual:
         - v4
         - v5
       default: v5
+      disabled:
+        variable: _.address
+        when: null
 ...