diff --git a/modules/nixos/multimedia/web/firefox/preferences.nix b/modules/nixos/multimedia/web/firefox/preferences.nix
index dbe0df3..54d3d6e 100644
--- a/modules/nixos/multimedia/web/firefox/preferences.nix
+++ b/modules/nixos/multimedia/web/firefox/preferences.nix
@@ -1,3 +1,12 @@
-{
-  "browser.urlbar.suggest.topsites" = false;
-}
+let
+  mkPreferences = prefs: builtins.concatStringsSep
+    "\n"
+    (map
+      (p: ''user_pref("${p}", ${builtins.toJSON prefs.${p}});'')
+      (builtins.attrNames prefs));
+in 
+  mkPreferences {
+    prefs = {
+      "browser.urlbar.suggest.topsites" = false;
+    };
+  }