diff --git a/doc/hx509.texi b/doc/hx509.texi
index 28fa537f9..03e554726 100644
--- a/doc/hx509.texi
+++ b/doc/hx509.texi
@@ -72,26 +72,6 @@ SUCH DAMAGE.
 
 @copynext
 
-Copyright (C) 1990 by the Massachusetts Institute of Technology
-
-Export of this software from the United States of America may
-require a specific license from the United States Government.
-It is the responsibility of any person or organization contemplating
-export to obtain such a license before exporting.
-
-WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
-distribute this software and its documentation for any purpose and
-without fee is hereby granted, provided that the above copyright
-notice appear in all copies and that both that copyright notice and
-this permission notice appear in supporting documentation, and that
-the name of M.I.T. not be used in advertising or publicity pertaining
-to distribution of the software without specific, written prior
-permission.  M.I.T. makes no representations about the suitability of
-this software for any purpose.  It is provided "as is" without express
-or implied warranty.
-
-@copynext
-
 Copyright (c) 1988, 1990, 1993
      The Regents of the University of California.  All rights reserved.