diff --git a/hw/vade/default.nix b/hw/vade/default.nix
index 9ad39aa..bd90145 100644
--- a/hw/vade/default.nix
+++ b/hw/vade/default.nix
@@ -26,4 +26,16 @@
   boot.extraModprobeConfig = ''
     options snd_hda_intel power_save=1
   '';
+
+  # ILITEK USI stylus/touchscreen support
+  # The stylus device is misclassified as a keyboard by the default evdev
+  # catchall. Force it to use libinput as a tablet device.
+  services.xserver.inputClassSections = [
+    ''
+      Identifier "ILITEK stylus tablet"
+      MatchProduct "ILIT2901:00 222A:5539 Stylus"
+      MatchDevicePath "/dev/input/event*"
+      Driver "libinput"
+    ''
+  ];
 }