diff --git a/firefox/20-manual.yml b/firefox/20-manual.yml
index 7419635..e9f8e81 100644
--- a/firefox/20-manual.yml
+++ b/firefox/20-manual.yml
@@ -3,5 +3,4 @@ manual:
 
   use_for_https:
     description: Also use this proxy for HTTPS
-    type: boolean
     default: true