diff --git a/ops/nixos/totoro/default.nix b/ops/nixos/totoro/default.nix
index 3991b4d557..da645353a9 100644
--- a/ops/nixos/totoro/default.nix
+++ b/ops/nixos/totoro/default.nix
@@ -73,7 +73,7 @@ in {
     pkgs.zfs
   ];
 
-  services.openssh.forwardX11 = true;
+  services.openssh.settings.X11Forwarding = true;
 
   # Extra packages.
   environment.systemPackages = with pkgs; [