diff --git a/src/pocketmine/tile/Chest.php b/src/pocketmine/tile/Chest.php
index 1eb109b0d..f8e57ea19 100644
--- a/src/pocketmine/tile/Chest.php
+++ b/src/pocketmine/tile/Chest.php
@@ -42,7 +42,7 @@ class Chest extends Spawnable implements InventoryHolder, Container, Nameable{
 
 	/** @var ChestInventory */
 	protected $inventory;
-	/** @var DoubleChestInventory */
+	/** @var DoubleChestInventory|null */
 	protected $doubleInventory = null;
 
 	/** @var int|null */