diff --git a/src/pocketmine/block/Trapdoor.php b/src/pocketmine/block/Trapdoor.php
index 434b3264b..370cef37d 100644
--- a/src/pocketmine/block/Trapdoor.php
+++ b/src/pocketmine/block/Trapdoor.php
@@ -24,6 +24,7 @@
 use pocketmine\item\Item;
 use pocketmine\item\Tool;
 use pocketmine\math\AxisAlignedBB;
+use pocketmine\level\sound\DoorSound;
 use pocketmine\Player;
 
 class Trapdoor extends Transparent{