diff --git a/nettle.texinfo b/nettle.texinfo
index 2163140b412c23d777da5b2f92dab6658901f472..51bfaeaabeb759a5fb442a1b7173b4180669628b 100644
--- a/nettle.texinfo
+++ b/nettle.texinfo
@@ -187,8 +187,13 @@ The implementation of the MD5 message digest is written by Colin Plumb.
 It has been hacked some more by Andrew Kuchling and @value{AUTHOR}.
 Released into the public domain.
 
+@item RIPMED160
+The implementation of RIPEMD160 message digest is based on the code in
+libgcrypt, copyright owned by the Free Software Foundation. Ported to
+Nettle by Andres Mejia. Released under the LGPL.
+
 @item SERPENT
-The implementation of the SERPENT is based on the code in libgcrypt,
+The implementation of the SERPENT cipher is based on the code in libgcrypt,
 copyright owned by the Free Software Foundation. Adapted to Nettle by
 Simon Josefsson and heavily modified by Niels M�ller. Assembly for
 x86_64 by Niels M�ller. Released under the LGPL.