diff -r 0a7d237c0919 Lib/wave.py
--- a/Lib/wave.py	Sun May 26 16:45:10 2013 -0400
+++ b/Lib/wave.py	Tue May 28 15:16:16 2013 -0400
@@ -83,8 +83,8 @@
 _array_fmts = None, 'b', 'h', None, 'l'
 
 # Determine endian-ness
-import struct
-if struct.pack("h", 1) == b"\000\001":
+import sys
+if sys.byteorder == 'big':
     big_endian = 1
 else:
     big_endian = 0