diff --git a/LICENSE b/LICENSE
index 3234c403..a8e9a51f 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2012 VMware, Inc.  All rights reserved.
+Copyright (c) 2012-2013 GoPivotal, Inc.  All rights reserved.
 Copyright (c) 2009-2012, Ask Solem & contributors.
 All rights reserved.
 
diff --git a/kombu/serialization.py b/kombu/serialization.py
index 0107ac6d..72425ded 100644
--- a/kombu/serialization.py
+++ b/kombu/serialization.py
@@ -183,8 +183,9 @@ class SerializerRegistry(object):
     def _for_untrusted_content(self, ctype, why):
         return ContentDisallowed(
             'Refusing to decode {0} content of type {1}'.format(
-                why, parenthesize_alias(self.type_to_name[ctype], ctype)),
-        )
+                why,
+                parenthesize_alias(self.type_to_name.get(ctype, ctype), ctype),
+        ))
 
 
 #: Global registry of serializers/deserializers.