diff --git a/src/pocketmine/network/mcpe/protocol/types/NetworkInventoryAction.php b/src/pocketmine/network/mcpe/protocol/types/NetworkInventoryAction.php
index 54ca69682..10591a67e 100644
--- a/src/pocketmine/network/mcpe/protocol/types/NetworkInventoryAction.php
+++ b/src/pocketmine/network/mcpe/protocol/types/NetworkInventoryAction.php
@@ -48,18 +48,12 @@ class NetworkInventoryAction{
 	 *
 	 * Expect these to change in the future.
 	 */
-	public const SOURCE_TYPE_CRAFTING_ADD_INGREDIENT = -2;
-	public const SOURCE_TYPE_CRAFTING_REMOVE_INGREDIENT = -3;
 	public const SOURCE_TYPE_CRAFTING_RESULT = -4;
 	public const SOURCE_TYPE_CRAFTING_USE_INGREDIENT = -5;
 
-	public const SOURCE_TYPE_ANVIL_INPUT = -10;
-	public const SOURCE_TYPE_ANVIL_MATERIAL = -11;
 	public const SOURCE_TYPE_ANVIL_RESULT = -12;
 	public const SOURCE_TYPE_ANVIL_OUTPUT = -13;
 
-	public const SOURCE_TYPE_ENCHANT_INPUT = -15;
-	public const SOURCE_TYPE_ENCHANT_MATERIAL = -16;
 	public const SOURCE_TYPE_ENCHANT_OUTPUT = -17;
 
 	public const SOURCE_TYPE_TRADING_INPUT_1 = -20;
@@ -69,9 +63,6 @@ class NetworkInventoryAction{
 
 	public const SOURCE_TYPE_BEACON = -24;
 
-	/** Any client-side window dropping its contents when the player closes it */
-	public const SOURCE_TYPE_CONTAINER_DROP_CONTENTS = -100;
-
 	public const ACTION_MAGIC_SLOT_CREATIVE_DELETE_ITEM = 0;
 	public const ACTION_MAGIC_SLOT_CREATIVE_CREATE_ITEM = 1;
 
@@ -214,10 +205,6 @@ class NetworkInventoryAction{
 			case self::SOURCE_TODO:
 				//These types need special handling.
 				switch($this->windowId){
-					case self::SOURCE_TYPE_CRAFTING_ADD_INGREDIENT:
-					case self::SOURCE_TYPE_CRAFTING_REMOVE_INGREDIENT:
-					case self::SOURCE_TYPE_CONTAINER_DROP_CONTENTS: //TODO: this type applies to all fake windows, not just crafting
-						return new SlotChangeAction($player->getCraftingGrid(), $this->inventorySlot, $this->oldItem, $this->newItem);
 					case self::SOURCE_TYPE_CRAFTING_RESULT:
 					case self::SOURCE_TYPE_CRAFTING_USE_INGREDIENT:
 						return null;