diff --git a/keystone/tests/unit/token/test_fernet_provider.py b/keystone/tests/unit/token/test_fernet_provider.py
index 45ddce2649..a9bdd8a738 100644
--- a/keystone/tests/unit/token/test_fernet_provider.py
+++ b/keystone/tests/unit/token/test_fernet_provider.py
@@ -46,11 +46,10 @@ class TestFernetTokenProvider(unit.TestCase):
 
     def test_invalid_token_raises_token_not_found(self):
         token_id = uuid.uuid4().hex
-        e = self.assertRaises(
+        self.assertRaises(
             exception.TokenNotFound,
             self.provider.validate_token,
             token_id)
-        self.assertIn(token_id, u'%s' % e)
 
 
 class TestValidate(unit.TestCase):
diff --git a/keystone/token/token_formatters.py b/keystone/token/token_formatters.py
index 4f553c58d2..ce17eabb20 100644
--- a/keystone/token/token_formatters.py
+++ b/keystone/token/token_formatters.py
@@ -91,7 +91,7 @@ class TokenFormatter(object):
             return self.crypto.decrypt(token.encode('utf-8'))
         except fernet.InvalidToken:
             raise exception.ValidationError(
-                _('This is not a recognized Fernet token %s') % token)
+                _('Could not recognize Fernet token'))
 
     @classmethod
     def restore_padding(cls, token):