diff --git a/src/main/java/appeng/tile/crafting/TileCraftingTile.java b/src/main/java/appeng/tile/crafting/TileCraftingTile.java
index 421a3783d..7a68627d0 100644
--- a/src/main/java/appeng/tile/crafting/TileCraftingTile.java
+++ b/src/main/java/appeng/tile/crafting/TileCraftingTile.java
@@ -233,7 +233,7 @@ public class TileCraftingTile extends AENetworkTile implements IAEMultiBlock, IP
 
     @MENetworkEventSubscribe
     public void updateCPUClusters(final MENetworkCraftingPatternChange c) {
-        this.cluster.onPatternChange();
+        if (this.cluster != null) this.cluster.onPatternChange();
     }
 
     public boolean isStatus() {