diff --git a/CHANGELOG.md b/CHANGELOG.md
index 34d937f41..191ef9ec2 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Refined Storage Changelog
 
+### 1.5.23
+- Fixed duplication bug with autocrafting (raoulvdberge)
+
 ### 1.5.22
 - Added oredict, blocking, processing, ore inputs access to OpenComputers API (raoulvdberge)
 - Added shortcut to clear Grid crafting matrix (CTRL+X) (raoulvdberge)
diff --git a/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/network/node/NetworkNodeCrafter.java b/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/network/node/NetworkNodeCrafter.java
index 1901e89d1..78bd31575 100755
--- a/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/network/node/NetworkNodeCrafter.java
+++ b/src/main/java/com/raoulvdberge/refinedstorage/apiimpl/network/node/NetworkNodeCrafter.java
@@ -63,7 +63,7 @@ public class NetworkNodeCrafter extends NetworkNode implements ICraftingPatternC
             ItemStack patternStack = patterns.getStackInSlot(i);
 
             if (!patternStack.isEmpty()) {
-                ICraftingPattern pattern = ((ICraftingPatternProvider) patternStack.getItem()).create(world, patternStack, this);
+                ICraftingPattern pattern = ((ICraftingPatternProvider) patternStack.getItem()).create(world, patternStack.copy(), this);
 
                 if (pattern.isValid()) {
                     actualPatterns.add(pattern);