diff -r f584d63c49c3 -r bf17aeafb869 mercurial/commands.py
--- a/mercurial/commands.py	Tue Jun 09 11:55:32 2009 -0500
+++ b/mercurial/commands.py	Tue Jun 09 09:25:31 2009 -0400
@@ -1728,7 +1728,7 @@
                 wp = repo.parents()
                 if opts.get('exact'):
                     if not nodeid or not p1:
-                        raise util.Abort(_('not a mercurial patch'))
+                        raise util.Abort(_('not a Mercurial patch'))
                     p1 = repo.lookup(p1)
                     p2 = repo.lookup(p2 or hex(nullid))