diff --git a/src/pocketmine/inventory/BaseInventory.php b/src/pocketmine/inventory/BaseInventory.php
index a465843c2..580640e21 100644
--- a/src/pocketmine/inventory/BaseInventory.php
+++ b/src/pocketmine/inventory/BaseInventory.php
@@ -93,10 +93,20 @@ abstract class BaseInventory implements Inventory{
 	}
 
 	/**
+	 * @param bool $includeEmpty
+	 *
 	 * @return Item[]
 	 */
-	public function getContents() : array{
-		return array_filter($this->slots->toArray(), function(Item $item = null){ return $item !== null; });
+	public function getContents(bool $includeEmpty = false) : array{
+		$contents = [];
+		for($i = 0, $size = $this->getSize(); $i < $size; ++$i){
+			$item = $this->getItem($i);
+			if($includeEmpty or !$item->isNull()){
+				$contents[$i] = $item;
+			}
+		}
+
+		return $contents;
 	}
 
 	/**
diff --git a/src/pocketmine/inventory/DoubleChestInventory.php b/src/pocketmine/inventory/DoubleChestInventory.php
index 7755b5f2a..32a6530dd 100644
--- a/src/pocketmine/inventory/DoubleChestInventory.php
+++ b/src/pocketmine/inventory/DoubleChestInventory.php
@@ -71,15 +71,6 @@ class DoubleChestInventory extends ChestInventory implements InventoryHolder{
 		return $index < $this->left->getSize() ? $this->left->clear($index, $send) : $this->right->clear($index - $this->right->getSize(), $send);
 	}
 
-	public function getContents() : array{
-		$contents = [];
-		for($i = 0, $size = $this->getSize(); $i < $size; ++$i){
-			$contents[$i] = $this->getItem($i);
-		}
-
-		return $contents;
-	}
-
 	/**
 	 * @param Item[] $items
 	 * @param bool   $send
diff --git a/src/pocketmine/inventory/Inventory.php b/src/pocketmine/inventory/Inventory.php
index abe48afa6..7e23b1935 100644
--- a/src/pocketmine/inventory/Inventory.php
+++ b/src/pocketmine/inventory/Inventory.php
@@ -108,9 +108,11 @@ interface Inventory{
 	public function removeItem(Item ...$slots) : array;
 
 	/**
+	 * @param bool $includeEmpty
+	 *
 	 * @return Item[]
 	 */
-	public function getContents() : array;
+	public function getContents(bool $includeEmpty = false) : array;
 
 	/**
 	 * @param Item[] $items