diff --git a/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_LargeTurbine.java b/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_LargeTurbine.java
index 13595cbc..74daf36a 100644
--- a/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_LargeTurbine.java
+++ b/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_LargeTurbine.java
@@ -126,6 +126,7 @@ public abstract class GT_MetaTileEntity_LargeTurbine extends GT_MetaTileEntity_M
 
     @Override
     public boolean checkRecipe(ItemStack aStack) {
+    	if(aStack==null || !(aStack.getItem() instanceof GT_MetaGenerated_Tool)  || aStack.getItemDamage() < 170 || aStack.getItemDamage() >179)return false;
         ArrayList<FluidStack> tFluids = getStoredFluids();
         if (tFluids.size() > 0) {
             if (baseEff == 0 || optFlow == 0 || counter >= 1000 || this.getBaseMetaTileEntity().hasWorkJustBeenEnabled()