diff --git a/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Cleanroom.java b/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Cleanroom.java
index 699f2acfc..88a61c3a6 100644
--- a/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Cleanroom.java
+++ b/src/main/java/gregtech/common/tileentities/machines/multi/GT_MetaTileEntity_Cleanroom.java
@@ -57,6 +57,7 @@ public String[] getDescription() {
 	public boolean checkRecipe(ItemStack aStack) {
     	int tierHatch = 0;
     	for (GT_MetaTileEntity_Hatch_Energy tHatch : mEnergyHatches) tierHatch = tHatch.mTier;
+    	for (GT_MetaTileEntity_Hatch_EnergyMulti tHatch : mEnergyHatchesMulti) tierHatch = tHatch.mTier;
 		mEfficiencyIncrease = 100 * tierHatch;
 		mMaxProgresstime = 100;
 		mEUt = -4;