diff --git a/curacao/co2meter/default.nix b/curacao/co2meter/default.nix
index e90634f..17433c2 100644
--- a/curacao/co2meter/default.nix
+++ b/curacao/co2meter/default.nix
@@ -1,7 +1,6 @@
 {
   pkgs,
   lib,
-  config,
   ...
 }:
 let
@@ -12,7 +11,7 @@ let
     rev = "push-nurpouorqoyr"; # Humidity + availability support
     sha256 = "sha256-nOhyBAgvjeQh9ys3cBJOVR67SDs96zBzxIRGpaq4yoA=";
   };
-  zytemp_mqtt = pkgs.python3Packages.buildPythonPackage rec {
+  zytemp_mqtt = pkgs.python3Packages.buildPythonPackage {
     name = "zytemp_mqtt";
     src = zytemp_mqtt_src;
     propagatedBuildInputs = with pkgs.python3Packages; [
@@ -33,6 +32,7 @@ let
     installPhase = ''
       mkdir -p $out/lib/udev/rules.d
       cp udev/90-usb-zytemp-permissions.rules $out/lib/udev/rules.d/90-usb-zytemp.rules
+      sed -i 's|"usb"|"hidraw"|' $out/lib/udev/rules.d/90-usb-zytemp.rules
     '';
   };
   mqtt_host = "192.168.7.53"; # Ludwig
@@ -74,7 +74,7 @@ in
           SystemCallFilter = [
             "@system-service"
             "~@privileged"
-            "~@resouces"
+            "~@resources"
           ];
           UMask = "0077";
         };