diff --git a/machine/imperium/default.nix b/machine/imperium/default.nix
index aeb1df5..eee7557 100644
--- a/machine/imperium/default.nix
+++ b/machine/imperium/default.nix
@@ -37,7 +37,14 @@
     pulse.enable = true;
   };
 
+  # This seems to be sufficient to autodetect the printing functionality of HP OfficeJet 6950
   services.printing.enable = true;
+  services.printing.drivers = [ pkgs.hplip ];
+  services.avahi = {
+    enable = true;
+    nssmdns = true;
+    openFirewall = true;
+  };
 
   users.users.tvb = {
     extraGroups = [ "networkmanager" ];