diff --git a/firefox/10-manual.yml b/firefox/10-manual.yml
index 596b79e9..047ff8a3 100644
--- a/firefox/10-manual.yml
+++ b/firefox/10-manual.yml
@@ -4,7 +4,9 @@ version: 1.1
 
 manual:
   description: Manual proxy configuration
-  disabled: true
+  disabled:
+    variable: _.proxy_mode
+    when_not: Manual proxy configuration
 
   http_proxy:  # HTTP Proxy