diff --git a/src/invidious/user/preferences.cr b/src/invidious/user/preferences.cr
index 55da7350..60939f24 100644
--- a/src/invidious/user/preferences.cr
+++ b/src/invidious/user/preferences.cr
@@ -59,6 +59,7 @@ struct Preferences
   property hidden_channels : Array(String)? = nil
   property default_trending_type : Invidious::Routes::Feeds::TrendingTypes = Invidious::Routes::Feeds::TrendingTypes::Default
   property default_playlist : String? = nil
+  property backend_number : Int32? = nil
 
   module BoolToString
     def self.to_json(value : String, json : JSON::Builder)