diff --git a/src/main/java/com/cricketcraft/chisel/api/IChiselItem.java b/src/main/java/com/cricketcraft/chisel/api/IChiselItem.java
index 6c2af1c9..62f8f6f5 100644
--- a/src/main/java/com/cricketcraft/chisel/api/IChiselItem.java
+++ b/src/main/java/com/cricketcraft/chisel/api/IChiselItem.java
@@ -31,17 +31,13 @@ public interface IChiselItem {
 	 * 
 	 * @param world
 	 *            {@link World} object
-	 * @param inv
-	 *            The inventory this chisel is currently in
-	 * @param slot
-	 *            The slot index of the chisel in the inventory
 	 * @param chisel
 	 *            The {@link ItemStack} representing the chisel
 	 * @param target
 	 *            The {@link ItemStack} representing the target item
 	 * @return True if the chisel should be damaged. False otherwise.
 	 */
-	boolean onChisel(World world, IInventory inv, int slot, ItemStack chisel, ICarvingVariation target);
+	boolean onChisel(World world, ItemStack chisel, ICarvingVariation target);
 
 	/**
 	 * Called to check if this {@link ItemStack} can be chiseled in this chisel. If not, there will be no possible variants displayed in the GUI.
diff --git a/src/main/java/com/cricketcraft/chisel/block/tileentity/TileEntityAutoChisel.java b/src/main/java/com/cricketcraft/chisel/block/tileentity/TileEntityAutoChisel.java
index bc2c662e..94269c48 100644
--- a/src/main/java/com/cricketcraft/chisel/block/tileentity/TileEntityAutoChisel.java
+++ b/src/main/java/com/cricketcraft/chisel/block/tileentity/TileEntityAutoChisel.java
@@ -210,7 +210,7 @@ public class TileEntityAutoChisel extends TileEntity implements ISidedInventory
 	private void chiselItem(int chiseled) {
 		if (!worldObj.isRemote) {
 			boolean breakChisel = false;
-			if (((IChiselItem) inventory[CHISEL].getItem()).onChisel(worldObj, this, CHISEL, inventory[CHISEL], General.getVariation(inventory[TARGET]))) {
+			if (((IChiselItem) inventory[CHISEL].getItem()).onChisel(worldObj, inventory[CHISEL], General.getVariation(inventory[TARGET]))) {
 				inventory[CHISEL].setItemDamage(inventory[CHISEL].getItemDamage() + 1);
 				if (inventory[CHISEL].getItemDamage() >= inventory[CHISEL].getMaxDamage()) {
 					setInventorySlotContents(CHISEL, null);
diff --git a/src/main/java/com/cricketcraft/chisel/inventory/SlotChiselSelection.java b/src/main/java/com/cricketcraft/chisel/inventory/SlotChiselSelection.java
index f40f4c0f..3b2b6f35 100644
--- a/src/main/java/com/cricketcraft/chisel/inventory/SlotChiselSelection.java
+++ b/src/main/java/com/cricketcraft/chisel/inventory/SlotChiselSelection.java
@@ -60,7 +60,7 @@ public class SlotChiselSelection extends Slot {
 
 		selInventory.updateItems();
 		
-		if (((IChiselItem) container.chisel.getItem()).onChisel(player.worldObj, player.inventory, player.inventory.currentItem, container.chisel, General.getVariation(crafted))) {
+		if (((IChiselItem) container.chisel.getItem()).onChisel(player.worldObj, container.chisel, General.getVariation(crafted))) {
 			container.chisel.damageItem(1, player);
 			if (container.chisel.stackSize <= 0) {
 				player.inventory.mainInventory[player.inventory.currentItem] = null;
diff --git a/src/main/java/com/cricketcraft/chisel/item/chisel/ChiselMode.java b/src/main/java/com/cricketcraft/chisel/item/chisel/ChiselMode.java
index 6efcab48..b58129b2 100644
--- a/src/main/java/com/cricketcraft/chisel/item/chisel/ChiselMode.java
+++ b/src/main/java/com/cricketcraft/chisel/item/chisel/ChiselMode.java
@@ -105,7 +105,7 @@ public enum ChiselMode {
 		if (held != null && held.getItem() instanceof IChiselItem) {
 			world.setBlock(x, y, z, v.getBlock(), v.getBlockMeta(), 3);
 			boolean breakChisel = false;
-			if (((IChiselItem) player.getCurrentEquippedItem().getItem()).onChisel(world, player.inventory, player.inventory.currentItem, player.getCurrentEquippedItem(), v)) {
+			if (((IChiselItem) player.getCurrentEquippedItem().getItem()).onChisel(world, player.getCurrentEquippedItem(), v)) {
 				player.getCurrentEquippedItem().damageItem(1, player);
 				if (player.getCurrentEquippedItem().stackSize <= 0) {
 					player.inventory.mainInventory[player.inventory.currentItem] = null;
diff --git a/src/main/java/com/cricketcraft/chisel/item/chisel/ItemChisel.java b/src/main/java/com/cricketcraft/chisel/item/chisel/ItemChisel.java
index 496543a6..91d8f569 100644
--- a/src/main/java/com/cricketcraft/chisel/item/chisel/ItemChisel.java
+++ b/src/main/java/com/cricketcraft/chisel/item/chisel/ItemChisel.java
@@ -111,7 +111,7 @@ public class ItemChisel extends Item implements IChiselItem {
 	}
 
 	@Override
-	public boolean onChisel(World world, IInventory inv, int slot, ItemStack chisel, ICarvingVariation target) {
+	public boolean onChisel(World world, ItemStack chisel, ICarvingVariation target) {
 		return Configurations.allowChiselDamage;
 	}