diff --git a/src/pocketmine/inventory/BaseInventory.php b/src/pocketmine/inventory/BaseInventory.php
index 6f32492fc..4f64680a2 100644
--- a/src/pocketmine/inventory/BaseInventory.php
+++ b/src/pocketmine/inventory/BaseInventory.php
@@ -47,7 +47,7 @@ abstract class BaseInventory implements Inventory{
 	/** @var string */
 	protected $title;
 	/** @var \SplFixedArray|Item[] */
-	protected $slots = [];
+	protected $slots;
 	/** @var Player[] */
 	protected $viewers = [];
 	/** @var InventoryEventProcessor */