--- a/mercurial/archival.py	Tue Aug 12 13:45:48 2008 +0200
+++ b/mercurial/archival.py	Sat Aug 16 14:46:56 2008 +0200
@@ -209,7 +209,7 @@
         archiver.addfile(name, mode, islink, data)
 
     if kind not in archivers:
-        raise util.Abort(_("unknown archive type '%s'" % kind))
+        raise util.Abort(_("unknown archive type '%s'") % kind)
 
     ctx = repo[node]
     archiver = archivers[kind](dest, prefix, mtime or ctx.date()[0])