diff --git a/materials.py b/materials.py
index ed03321..83d648b 100644
--- a/materials.py
+++ b/materials.py
@@ -4,7 +4,7 @@ from materials import classicMaterials, materials
 from numpy import *
 NOTEX = 184
 #wow, punching this map in would have been much easier in hex
-class MCMaterials():
+class MCMaterials(object):
     def materialNamed(self, name):
         return self.names.index(name);
 
@@ -423,4 +423,4 @@ def texCoords(idx):
 materials.blockTextures = array([map(texCoords, faces) for (faces, name) in materials.blockTextures], dtype='uint8')
 classicMaterials.blockTextures = array([map(texCoords, faces) for (faces, name) in classicMaterials.blockTextures], dtype='uint8')
 
-alphaMaterials = materials;
\ No newline at end of file
+alphaMaterials = materials;
diff --git a/mclevel.py b/mclevel.py
index 0a45b4c..fb4d220 100644
--- a/mclevel.py
+++ b/mclevel.py
@@ -269,7 +269,7 @@ def decompress_first(func):
         return func(self, *args, **kw);
     return dec_first
     
-class MCLevel:
+class MCLevel(object):
     """ MCLevel is an abstract class providing many routines to the different level types, 
     including a common copyEntitiesFrom built on class-specific routines, and
     a dummy getChunk/getPresentChunks for the finite levels.
@@ -1188,7 +1188,7 @@ class PlayerNotFound(Exception): pass
 class ChunkNotPresent(Exception): pass
 class ChunkMalformed(ChunkNotPresent): pass
 
-class ZeroChunk:
+class ZeroChunk(object):
     " a placebo for neighboring-chunk routines "
     def compress(self): pass
     def load(self): pass
diff --git a/nbt.py b/nbt.py
index 455800b..0479e8b 100644
--- a/nbt.py
+++ b/nbt.py
@@ -23,7 +23,7 @@ import StringIO;
 from numpy import array, zeros, uint8, fromstring
 TAGfmt = ">b"
 
-class TAG_Value:
+class TAG_Value(object):
   """Simple values. Subclasses override fmt to change the type and size. 
   Subclasses may set dataType instead of overriding setValue for automatic data type coercion"""