=== modified file 'bzrlib/log.py'
--- bzrlib/log.py	2012-03-14 11:30:42 +0000
+++ bzrlib/log.py	2013-07-28 03:05:27 +0000
@@ -334,9 +334,9 @@
     gpg_strategy = gpg.GPGStrategy(None)
     result = repo.verify_revision_signature(rev_id, gpg_strategy)
     if result[0] == gpg.SIGNATURE_VALID:
-        return "valid signature from {0}".format(result[1])
+        return u"valid signature from {0}".format(result[1])
     if result[0] == gpg.SIGNATURE_KEY_MISSING:
-        return "unknown key {0}".format(result[1])
+        return u"unknown key {0}".format(result[1])
     if result[0] == gpg.SIGNATURE_NOT_VALID:
         return "invalid signature!"
     if result[0] == gpg.SIGNATURE_NOT_SIGNED: