diff --git a/src/pocketmine/network/mcpe/protocol/InventoryTransactionPacket.php b/src/pocketmine/network/mcpe/protocol/InventoryTransactionPacket.php
index 76617535ce..5d8782ec32 100644
--- a/src/pocketmine/network/mcpe/protocol/InventoryTransactionPacket.php
+++ b/src/pocketmine/network/mcpe/protocol/InventoryTransactionPacket.php
@@ -60,6 +60,7 @@ class InventoryTransactionPacket extends DataPacket{
 	const SOURCE_TYPE_CRAFTING_ADD_INGREDIENT = -2;
 	const SOURCE_TYPE_CRAFTING_REMOVE_INGREDIENT = -3;
 	const SOURCE_TYPE_CRAFTING_RESULT = -4;
+	const SOURCE_TYPE_CRAFTING_USE_INGREDIENT = -5;
 
 	const SOURCE_TYPE_ANVIL_INPUT = -10;
 	const SOURCE_TYPE_ANVIL_MATERIAL = -11;