--- CBOR-XS/XS.pm	2013/10/25 23:09:45	1.1
+++ CBOR-XS/XS.pm	2013/10/26 10:41:12	1.2
@@ -170,9 +170,10 @@
 C<1> and C<0>. You can check whether a scalar is a CBOR boolean by using
 the C<CBOR::XS::is_bool> function.
 
-=item null
+=item Null, Undefined
 
-A CBOR Null value becomes C<undef> in Perl.
+CBOR Null and Undefined values becomes C<undef> in Perl (in the future,
+Undefined may raise an exception).
 
 =back