diff --git a/src/evdev-mt-touchpad.c b/src/evdev-mt-touchpad.c
index 68070c2e..16846e9d 100644
--- a/src/evdev-mt-touchpad.c
+++ b/src/evdev-mt-touchpad.c
@@ -825,9 +825,16 @@ tp_device_added(struct evdev_device *device,
 		struct evdev_device *added_device)
 {
 	struct tp_dispatch *tp = (struct tp_dispatch*)device->dispatch;
+	unsigned int bus_tp = libevdev_get_id_bustype(device->evdev),
+		     bus_trp = libevdev_get_id_bustype(added_device->evdev);
+	bool tp_is_internal, trp_is_internal;
+
+	tp_is_internal = bus_tp != BUS_USB && bus_tp != BUS_BLUETOOTH;
+	trp_is_internal = bus_trp != BUS_USB && bus_trp != BUS_BLUETOOTH;
 
 	if (tp->buttons.trackpoint == NULL &&
-	    (added_device->tags & EVDEV_TAG_TRACKPOINT)) {
+	    (added_device->tags & EVDEV_TAG_TRACKPOINT) &&
+	    tp_is_internal && trp_is_internal) {
 		/* Don't send any pending releases to the new trackpoint */
 		tp->buttons.active_is_topbutton = false;
 		tp->buttons.trackpoint = added_device;