diff --git a/pocket.py b/pocket.py
index 200903d..3da07bc 100644
--- a/pocket.py
+++ b/pocket.py
@@ -400,12 +400,18 @@ class PocketChunk(LightedChunk):
     def load(self):
         pass
 
+    def unload(self):
+        pass
+
     def decompress(self):
         pass
 
     def compress(self):
         pass
 
+    def compressedSize(self):
+        return 0
+
     def unpackChunkData(self):
         for key in ('SkyLight', 'BlockLight', 'Data'):
             dataArray = getattr(self, key)