diff --git a/mercurial/manifest.py b/mercurial/manifest.py
--- a/mercurial/manifest.py
+++ b/mercurial/manifest.py
@@ -5,11 +5,10 @@
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
-import struct
 from revlog import *
 from i18n import gettext as _
 from demandload import *
-demandload(globals(), "bisect array")
+demandload(globals(), "array bisect struct")
 
 class manifest(revlog):
     def __init__(self, opener, defversion=REVLOGV0):