diff --git a/src/engine/gameManager/NPCManager.java b/src/engine/gameManager/NPCManager.java
index 960bcc6b..7e5acf18 100644
--- a/src/engine/gameManager/NPCManager.java
+++ b/src/engine/gameManager/NPCManager.java
@@ -27,6 +27,7 @@ import org.pmw.tinylog.Logger;
 
 import java.util.ArrayList;
 import java.util.HashMap;
+import java.util.List;
 import java.util.concurrent.ThreadLocalRandom;
 
 import static engine.math.FastMath.acos;
@@ -522,7 +523,9 @@ public enum NPCManager {
 
         ArrayList<Item> itemList = new ArrayList<>();
 
-        for (WorkOrder workOrder : ForgeManager.vendorWorkOrderLookup.get(npc))
+        List<WorkOrder> vendorWorkOrders = ForgeManager.vendorWorkOrderLookup.get(npc);
+
+        for (WorkOrder workOrder : vendorWorkOrders)
             itemList.addAll(workOrder.cooking);
 
         return itemList;