diff --git a/maze/__init__.py b/maze/__init__.py
index 90670ef..c59a777 100644
--- a/maze/__init__.py
+++ b/maze/__init__.py
@@ -1,5 +1,5 @@
 import copy
-import random
+from random import randint
 
 
 class CS235Maze(object):
@@ -20,10 +20,11 @@ class CS235Maze(object):
 
 
 def make_maze(size=8):
-    r = [[[0] * size] * size] * size
+    r = []
     for i in xrange(size):
+        r.append([])
         for j in xrange(size):
-            r[i][j] = [random.randint(0, 1) for i in xrange(size)]
+            r[i].append([randint(0, 1) for k in xrange(size)])
     r[0][0][0] = 1
     r[7][7][7] = 1
     return CS235Maze(r, size)