diff --git a/machines/loki/configuration.nix b/machines/loki/configuration.nix
index f061dec..e9ea4b5 100644
--- a/machines/loki/configuration.nix
+++ b/machines/loki/configuration.nix
@@ -375,14 +375,6 @@
 
   services = {
     udev = {
-      extraHwdb = ''
-        evdev:name:ELECOM TrackBall Mouse HUGE TrackBall:*
-          ID_INPUT_KEY=1
-          KEYBOARD_KEY_90008=red
-          KEYBOARD_KEY_90007=copy
-          KEYBOARD_KEY_90006=paste
-      '';
-
       extraRules = ''
         ACTION=="add", ATTRS{idVendor}=="0951", ATTRS{idProduct}=="1666", NAME=keys
         ACTION=="add", ATTRS{idVendor}=="0781", ATTRS{idProduct}=="55b1", NAME=vault