diff --git a/home/applications/firefox/default.nix b/home/applications/firefox/default.nix
index db2f0fc..e4bf348 100644
--- a/home/applications/firefox/default.nix
+++ b/home/applications/firefox/default.nix
@@ -3,17 +3,12 @@
     enable = true;
     profiles."default" = {
       extraConfig = ''
-        ${builtins.readFile (pkgs.fetchurl {
-          # FIXME: IFD
+        ${builtins.readFile (builtins.fetchurl {
           url = "https://raw.githubusercontent.com/arkenfox/user.js/126.1/user.js";
-          hash = "sha256-XRtG0iLKh8uqbeX7Rc2H6VJwZYJoNZPBlAfZEfrSCP4=";
+          sha256 = "sha256-XRtG0iLKh8uqbeX7Rc2H6VJwZYJoNZPBlAfZEfrSCP4=";
         })}
         ${builtins.readFile ./user-overrides.js}
       '';
     };
   };
-
-  home.sessionVariables = {
-    MOZ_USE_XINPUT2 = "1";
-  };
 }
diff --git a/home/applications/thunderbird/default.nix b/home/applications/thunderbird/default.nix
index 5b7628d..c884e74 100644
--- a/home/applications/thunderbird/default.nix
+++ b/home/applications/thunderbird/default.nix
@@ -1,13 +1,12 @@
-{pkgs, ...}: {
+{
   programs.thunderbird = {
     enable = true;
     profiles.default = {
       isDefault = true;
       extraConfig = ''
-        ${builtins.readFile (pkgs.fetchurl {
-          # FIXME: IFD
+        ${builtins.readFile (builtins.fetchurl {
           url = "https://raw.githubusercontent.com/HorlogeSkynet/thunderbird-user.js/d6b18302e46349d9924c8a76951bae6efca51501/user.js";
-          hash = "sha256-66B1yLQkQnydAUXD7KGt32OhWSYcdWX+BUozrgW9uAg=";
+          sha256 = "sha256-66B1yLQkQnydAUXD7KGt32OhWSYcdWX+BUozrgW9uAg=";
         })}
         ${builtins.readFile ./user-overrides.js}
       '';