diff --git a/IronChests2/common/cpw/mods/ironchest/BlockIronChest.java b/IronChests2/common/cpw/mods/ironchest/BlockIronChest.java
index 25376ab..6eab51d 100644
--- a/IronChests2/common/cpw/mods/ironchest/BlockIronChest.java
+++ b/IronChests2/common/cpw/mods/ironchest/BlockIronChest.java
@@ -131,7 +131,7 @@ public class BlockIronChest extends BlockContainer {
   @Override
   public void onBlockAdded(World world, int i, int j, int k) {
     super.onBlockAdded(world, i, j, k);
-    world.markBlockNeedsUpdate(i, j, k);
+    world.markBlockForUpdate(i, j, k);
   }
 
   @Override
@@ -153,7 +153,7 @@ public class BlockIronChest extends BlockContainer {
     TileEntity te = world.getBlockTileEntity(i, j, k);
     if (te != null && te instanceof TileEntityIronChest) {
       ((TileEntityIronChest) te).setFacing(chestFacing);
-      world.markBlockNeedsUpdate(i, j, k);
+      world.markBlockForUpdate(i, j, k);
     }
   }
 
diff --git a/IronChests2/common/cpw/mods/ironchest/ItemChestChanger.java b/IronChests2/common/cpw/mods/ironchest/ItemChestChanger.java
index e22679f..60460b8 100644
--- a/IronChests2/common/cpw/mods/ironchest/ItemChestChanger.java
+++ b/IronChests2/common/cpw/mods/ironchest/ItemChestChanger.java
@@ -79,8 +79,7 @@ public class ItemChestChanger extends Item {
     world.setBlockTileEntity(X, Y, Z, newchest);
     world.setBlockMetadataWithNotify(X, Y, Z, newchest.getType().ordinal());
     world.notifyBlocksOfNeighborChange(X, Y, Z, world.getBlockId(X, Y, Z));
-    world.markBlockNeedsUpdate(X, Y, Z);
-    world.markBlocksDirty(X, Y, Z, X, Y, Z);
+    world.markBlockForUpdate(X, Y, Z);
     stack.stackSize=0;
     return true;
 	}
diff --git a/IronChests2/common/cpw/mods/ironchest/TileEntityIronChest.java b/IronChests2/common/cpw/mods/ironchest/TileEntityIronChest.java
index 124f053..61745f8 100644
--- a/IronChests2/common/cpw/mods/ironchest/TileEntityIronChest.java
+++ b/IronChests2/common/cpw/mods/ironchest/TileEntityIronChest.java
@@ -103,7 +103,7 @@ public class TileEntityIronChest extends TileEntity implements IInventory {
         topStacks[i] = null;
       }
       if (worldObj!=null) {
-        worldObj.markBlockNeedsUpdate(xCoord, yCoord, zCoord);
+        worldObj.markBlockForUpdate(xCoord, yCoord, zCoord);
       }
       return;
     }
@@ -133,7 +133,7 @@ public class TileEntityIronChest extends TileEntity implements IInventory {
       topStacks[i] = null;
     }
     if (worldObj!=null) {
-      worldObj.markBlockNeedsUpdate(xCoord, yCoord, zCoord);
+      worldObj.markBlockForUpdate(xCoord, yCoord, zCoord);
     }
   }