diff --git a/home/applications/thunderbird/default.nix b/home/applications/thunderbird/default.nix
index 5e33efc..55121f7 100644
--- a/home/applications/thunderbird/default.nix
+++ b/home/applications/thunderbird/default.nix
@@ -2,7 +2,7 @@
   programs.thunderbird = {
     enable = true;
     package = pkgs.thunderbird.override {
-      extraPerfFiles = [
+      extraPrefsFiles = [
         (pkgs.fetchurl {
           url = "https://raw.githubusercontent.com/HorlogeSkynet/thunderbird-user.js/d6b18302e46349d9924c8a76951bae6efca51501/user.js";
           hash = "sha256-66B1yLQkQnydAUXD7KGt32OhWSYcdWX+BUozrgW9uAg=";