diff --git a/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/autocrafting/task/CraftingTask.java b/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/autocrafting/task/CraftingTask.java
index e55d2ba36..6b54076ab 100755
--- a/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/autocrafting/task/CraftingTask.java
+++ b/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/autocrafting/task/CraftingTask.java
@@ -346,7 +346,7 @@ public class CraftingTask implements ICraftingTask {
                 continue;
             }
 
-            PossibleInputs possibleInputs = new PossibleInputs(inputs);
+            PossibleInputs possibleInputs = new PossibleInputs(new ArrayList<>(inputs));
             possibleInputs.sort(mutatedStorage, results);
 
             ItemStack possibleInput = possibleInputs.get();