diff -r 7c4f0c3dedaf Doc/library/ipaddress.rst
--- a/Doc/library/ipaddress.rst	Wed Jan 15 15:09:05 2014 +0000
+++ b/Doc/library/ipaddress.rst	Wed Jan 15 10:04:54 2014 -0800
@@ -165,7 +165,7 @@
 
    .. attribute:: is_unspecified
 
-      ``True`` if the address is unspecified.  See :RFC:`5375` (for IPv4)
+      ``True`` if the address is unspecified.  See :RFC:`5735` (for IPv4)
       or :RFC:`2373` (for IPv6).
 
    .. attribute:: is_reserved