diff --git a/src/evdev-mt-touchpad.c b/src/evdev-mt-touchpad.c
index 99880299..c3da8f9d 100644
--- a/src/evdev-mt-touchpad.c
+++ b/src/evdev-mt-touchpad.c
@@ -645,12 +645,14 @@ tp_process_fake_touches(struct tp_dispatch *tp,
 	    EVDEV_MODEL_SYNAPTICS_SERIAL_TOUCHPAD)
 		tp_restore_synaptics_touches(tp, time);
 
-	/* ALPS touchpads always set 3 slots in the kernel, even
+	/* ALPS serial touchpads always set 3 slots in the kernel, even
 	 * where they support less than that. So we get BTN_TOOL_TRIPLETAP
 	 * but never slot 2 because our slot count is wrong.
 	 * This also means that the third touch falls through the cracks and
 	 * is ignored.
 	 *
+	 * See https://gitlab.freedesktop.org/libinput/libinput/issues/408
+	 *
 	 * All touchpad devices have at least one slot so we only do this
 	 * for 2 touches or higher.
 	 *
@@ -665,7 +667,8 @@ tp_process_fake_touches(struct tp_dispatch *tp,
 	 * For a long explanation of what happens, see
 	 * https://gitlab.freedesktop.org/libevdev/libevdev/merge_requests/19
 	 */
-	if (nfake_touches > 1 && tp->has_mt &&
+	if (tp->device->model_flags & EVDEV_MODEL_ALPS_SERIAL_TOUCHPAD &&
+	    nfake_touches > 1 && tp->has_mt &&
 	    tp->nactive_slots > 0 &&
 	    nfake_touches > tp->nactive_slots &&
 	    tp->nactive_slots < tp->num_slots) {
diff --git a/src/evdev.c b/src/evdev.c
index bf85aa24..3f4e6aac 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -1384,6 +1384,7 @@ evdev_read_model_flags(struct evdev_device *device)
 #define MODEL(name) { QUIRK_MODEL_##name, EVDEV_MODEL_##name }
 		MODEL(WACOM_TOUCHPAD),
 		MODEL(SYNAPTICS_SERIAL_TOUCHPAD),
+		MODEL(ALPS_SERIAL_TOUCHPAD),
 		MODEL(LENOVO_T450_TOUCHPAD),
 		MODEL(TRACKBALL),
 		MODEL(APPLE_TOUCHPAD_ONEBUTTON),
diff --git a/src/evdev.h b/src/evdev.h
index e95f7e60..0eda22f9 100644
--- a/src/evdev.h
+++ b/src/evdev.h
@@ -108,6 +108,7 @@ enum evdev_device_model {
 	EVDEV_MODEL_DEFAULT = 0,
 	EVDEV_MODEL_WACOM_TOUCHPAD		= bit(1),
 	EVDEV_MODEL_SYNAPTICS_SERIAL_TOUCHPAD	= bit(2),
+	EVDEV_MODEL_ALPS_SERIAL_TOUCHPAD	= bit(3),
 	EVDEV_MODEL_LENOVO_T450_TOUCHPAD	= bit(4),
 	EVDEV_MODEL_APPLE_TOUCHPAD_ONEBUTTON	= bit(5),
 	EVDEV_MODEL_LENOVO_SCROLLPOINT		= bit(6),