--- a/mercurial/commands.py	Tue Jan 30 19:09:08 2007 -0200
+++ b/mercurial/commands.py	Tue Jan 30 20:37:58 2007 -0200
@@ -2491,7 +2491,7 @@
     command.
     """
     if os.path.exists(fname):
-        f = open(fname)
+        f = open(fname, "rb")
     else:
         f = urllib.urlopen(fname)
     gen = changegroup.readbundle(f, fname)