diff --git a/doc/config.but b/doc/config.but
index 625d5231..f96d2576 100644
--- a/doc/config.but
+++ b/doc/config.but
@@ -1,4 +1,4 @@
-\versionid $Id: config.but,v 1.55 2003/02/05 09:05:35 simon Exp $
+\versionid $Id: config.but,v 1.56 2003/02/19 09:54:45 jacob Exp $
 
 \C{config} Configuring PuTTY
 
@@ -2124,7 +2124,7 @@ This is an SSH2-specific bug.
 
 \cfg{winhelp-topic}{ssh.bugs.derivekey2}
 
-Versions below 2.1.0 of the SSH server software from \cw{ssh.com}
+Versions below 2.0.11 of the SSH server software from \cw{ssh.com}
 compute the keys for the session encryption incorrectly. This
 problem can cause various error messages, such as \q{Incoming packet
 was garbled on decryption}, or possibly even \q{Out of memory}.