diff --git a/src/compositor.h b/src/compositor.h
index e64f30ce..0719abda 100644
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -561,7 +561,6 @@ struct weston_seat {
 
 	void (*led_update)(struct weston_seat *ws, enum weston_led leds);
 
-	uint32_t slot_map;
 	struct input_method *input_method;
 	char *seat_name;
 };