diff --git a/nix/users/ziro/darwin.nix b/nix/users/ziro/darwin.nix
index 7235fa0..24aff85 100644
--- a/nix/users/ziro/darwin.nix
+++ b/nix/users/ziro/darwin.nix
@@ -28,6 +28,11 @@
   #   };
   # };
 
+  home.sessionVariables = {
+    MOZ_LEGACY_PROFILES = 1;
+    MOZ_ALLOW_DOWNGRADE = 1;
+  };
+
   home.activation.applications = let
     env = pkgs.buildEnv {
       name = "home-applications";