diff --git a/nixbld-etc-nixos/configuration.nix b/nixbld-etc-nixos/configuration.nix
index bf18250..24d0236 100644
--- a/nixbld-etc-nixos/configuration.nix
+++ b/nixbld-etc-nixos/configuration.nix
@@ -7,7 +7,7 @@
 let
   netifWan = "enp0s31f6";
   netifLan = "enp3s0";
-  netifWifi = "wlp4s0";
+  netifWifi = "wlp0s20f0u1";
   netifSit = "henet0";
   hydraWwwOutputs = "/var/www/hydra-outputs";
 in
@@ -26,18 +26,7 @@ in
   # Use the systemd-boot EFI boot loader.
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
-
-  # work around iwl driver bug in newer kernels
-  boot.kernelPackages = pkgs.linuxPackagesFor (pkgs.linux_4_19.override {
-    argsOverride = rec {
-      src = pkgs.fetchurl {
-        url = "mirror://kernel/linux/kernel/v4.x/linux-${version}.tar.xz";
-        sha256 = "0d2bcg0krahia2ylgqaxdppyr9idq2pi6y1si6h8n9sg6rj3a57i";
-      };
-      version = "4.19.79";
-      modDirVersion = version;
-      };
-  });
+  boot.blacklistedKernelModules = ["iwlwifi"];
 
   security.apparmor.enable = true;