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-rw-r--r--src/main/java/gregtech/api/util/GT_OreDictUnificator.java1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/main/java/gregtech/api/util/GT_OreDictUnificator.java b/src/main/java/gregtech/api/util/GT_OreDictUnificator.java
index 48882bb72f..75ca3a7141 100644
--- a/src/main/java/gregtech/api/util/GT_OreDictUnificator.java
+++ b/src/main/java/gregtech/api/util/GT_OreDictUnificator.java
@@ -268,6 +268,7 @@ public class GT_OreDictUnificator {
else if (obj instanceof List) aStacks = (ItemStack[]) ((List) obj).toArray(new ItemStack[0]);
List<ItemStack> rList = new ArrayList<>();
for (ItemStack aStack : aStacks) {
+ if (aStack == null) continue;
rList.add(aStack);
List<ItemStack> tList = sUnificationTable.get(new GT_ItemStack2(aStack));
if (tList != null) {