diff --git a/piece.gd b/piece.gd
index 22418ab..d79d5d4 100644
--- a/piece.gd
+++ b/piece.gd
@@ -94,6 +94,9 @@ func do_move(move: Vector2i) -> Callable:
 func undo_move() -> Callable:
 	var old_pos := lpos
 	return func():
+		for tween in tweens:
+			tween.kill()
+		position = target_pos()
 		lpos = old_pos
 		tween_to_target()