diff --git a/nixos/boxes/foureighty/default.nix b/nixos/boxes/foureighty/default.nix
index 7c981a37..1c851a10 100644
--- a/nixos/boxes/foureighty/default.nix
+++ b/nixos/boxes/foureighty/default.nix
@@ -40,6 +40,15 @@
   boot.extraModprobeConfig = "options thinkpad_acpi fan_control=1";
   services.thinkfan = {
     enable = true;
+    levels = [
+      [ 0 0 55 ]
+      [ 1 48 60 ]
+      [ 2 50 61 ]
+      [ 3 52 63 ]
+      [ 6 56 65 ]
+      [ 7 60 85 ]
+      [ "level full-speed" 80 32767 ]
+    ];
     sensors = [
       {
         type = "hwmon";