diff -r 9a75d2559cff -r 6500a2eebee8 mercurial/hg.py
--- a/mercurial/hg.py	Wed Mar 19 23:04:03 2014 -0700
+++ b/mercurial/hg.py	Tue Apr 01 15:11:19 2014 -0500
@@ -451,7 +451,7 @@
                         if bn == 'default':
                             status = _("updating to bookmark @\n")
                         else:
-                            status = _("updating to bookmark @ on branch %s\n"
+                            status = (_("updating to bookmark @ on branch %s\n")
                                        % bn)
                     except KeyError:
                         try: