diff --git a/firefox/30-auto.yml b/firefox/30-auto.yml
index 50961391..77e252b6 100644
--- a/firefox/30-auto.yml
+++ b/firefox/30-auto.yml
@@ -5,7 +5,4 @@ version: 1.1
 auto:
   description: Automatic proxy configuration URL
   type: web_address
-  disabled:
-    variable: _.proxy_mode
-    when_not: Automatic proxy configuration URL
 ...