diff --git a/src/main/java/gregtech/api/enums/ItemList.java b/src/main/java/gregtech/api/enums/ItemList.java
index 4374ad93..95e3c086 100644
--- a/src/main/java/gregtech/api/enums/ItemList.java
+++ b/src/main/java/gregtech/api/enums/ItemList.java
@@ -373,10 +373,7 @@ public enum ItemList implements IItemContainer {
     ZPM,
     Fuel_Can_Plastic_Empty,
     Fuel_Can_Plastic_Filled,
-    Upgrade_Battery,
-    Upgrade_Overclocker,
     Upgrade_Muffler,
-    Upgrade_SteamEngine,
     Upgrade_Lock,
     Cover_Controller,
     Cover_ActivityDetector,
diff --git a/src/main/java/gregtech/loaders/postload/GT_ItemMaxStacksizeLoader.java b/src/main/java/gregtech/loaders/postload/GT_ItemMaxStacksizeLoader.java
index 9bdec358..107b61e4 100644
--- a/src/main/java/gregtech/loaders/postload/GT_ItemMaxStacksizeLoader.java
+++ b/src/main/java/gregtech/loaders/postload/GT_ItemMaxStacksizeLoader.java
@@ -1,7 +1,5 @@
 package gregtech.loaders.postload;
 
-import gregtech.GT_Mod;
-import gregtech.api.enums.ItemList;
 import gregtech.api.enums.OrePrefixes;
 import gregtech.api.util.GT_Log;
 import net.minecraft.init.Blocks;
@@ -13,7 +11,7 @@ public class GT_ItemMaxStacksizeLoader
     public void run() {
         GT_Log.out.println("GT_Mod: Changing maximum Stacksizes if configured.");
 
-        ItemList.Upgrade_Overclocker.getItem().setMaxStackSize(GT_Mod.gregtechproxy.mUpgradeCount);
+        //ItemList.Upgrade_Overclocker.getItem().setMaxStackSize(GT_Mod.gregtechproxy.mUpgradeCount);
         Items.CAKE.setMaxStackSize(64);
         Items.OAK_DOOR.setMaxStackSize(8);
         Items.IRON_DOOR.setMaxStackSize(8);