diff --git a/machines/serverle/hardware-configuration.nix b/machines/serverle/hardware-configuration.nix
index a1ffba5..a8be875 100644
--- a/machines/serverle/hardware-configuration.nix
+++ b/machines/serverle/hardware-configuration.nix
@@ -1,34 +1,37 @@
 { config, pkgs, lib, ... }:
 {
-  boot.loader = {
-    raspberryPi = {
-      firmwareConfig = ''
-        # Disable the ACT LED.
-        dtparam=act_led_trigger=none
-        dtparam=act_led_activelow=off
-        # Disable the PWR LED.
-        # somehow this changed in firmware settings: https://github.com/raspberrypi/firmware/issues/1742
-        #dtparam=pwr_led_trigger=default-on
-        dtparam=pwr_led_activelow=off
+  boot = {
+    loader = {
+      raspberryPi = {
+        firmwareConfig = ''
+          # Disable the ACT LED.
+          dtparam=act_led_trigger=none
+          dtparam=act_led_activelow=off
+          # Disable the PWR LED.
+          # somehow this changed in firmware settings: https://github.com/raspberrypi/firmware/issues/1742
+          #dtparam=pwr_led_trigger=default-on
+          dtparam=pwr_led_activelow=off
 
-        # Disable ethernet port LEDs
-        dtparam=eth0_led=4
-        dtparam=eth1_led=4
+          # Disable ethernet port LEDs
+          dtparam=eth0_led=4
+          dtparam=eth1_led=4
 
-        # Disable SD-Card pools
-        dtparam=sd_pool_once=on
-      '';
+          # Disable SD-Card pools
+          dtparam=sd_pool_once=on
+        '';
 
-      # the bootloader has to be enabled for fat systems. for ext use the other one.
-      enable = true;
-      version = 4;
+        # the bootloader has to be enabled for fat systems. for ext use the other one.
+        enable = true;
+        version = 4;
+      };
+      generic-extlinux-compatible.enable = false;
     };
-    generic-extlinux-compatible.enable = false;
+    # Kernel configuration
+    kernelParams = [ "cma=64M" "console=tty0" ];
+    # remove with 23.05
+    kernelPackages = pkgs.unstable.linuxKernel.packages.linux_rpi4;
   };
 
-  # Kernel configuration
-  boot.kernelParams = [ "cma=64M" "console=tty0" ];
-
   # Fix wifi disconnect
   networking.networkmanager.wifi.powersave = false;
 }