diff --git a/Lib/test/test_zlib.py b/Lib/test/test_zlib.py
index 719b0e7..ccfbc7d 100644
--- a/Lib/test/test_zlib.py
+++ b/Lib/test/test_zlib.py
@@ -80,14 +80,14 @@
 # in order to provide more variations.
 for sync in [zlib.Z_NO_FLUSH, zlib.Z_SYNC_FLUSH, zlib.Z_FULL_FLUSH]:
     for level in range(10):
-	obj = zlib.compressobj( level )
-    	d = obj.compress( buf[:3000] )
-	d = d + obj.flush( sync )
-	d = d + obj.compress( buf[3000:] )
-	d = d + obj.flush()
-	if zlib.decompress(d) != buf:
-	    print "Decompress failed: flush mode=%i, level=%i" % (sync,level)
-	del obj
+        obj = zlib.compressobj( level )
+        d = obj.compress( buf[:3000] )
+        d = d + obj.flush( sync )
+        d = d + obj.compress( buf[3000:] )
+        d = d + obj.flush()
+        if zlib.decompress(d) != buf:
+            print "Decompress failed: flush mode=%i, level=%i" % (sync,level)
+        del obj
 
 def ignore():
     """An empty function with a big string.