diff --git a/apps/amethyst/lib/apps/connection_handler.ex b/apps/amethyst/lib/apps/connection_handler.ex
index e783bf0..6e56076 100644
--- a/apps/amethyst/lib/apps/connection_handler.ex
+++ b/apps/amethyst/lib/apps/connection_handler.ex
@@ -126,7 +126,7 @@ defmodule Amethyst.ConnectionHandler do
     import Amethyst.NBT.Write
     heightmaps = compound(%{})
 
-    data = Enum.chunk_every(chunk_array, 16)
+    data = Enum.chunk_every(chunk_array, 16, 16, 0) # 0 -> air
   end
 
   defp handle_packet(id, data, connstate, version, state) do