<para>
Before you start, make sure you've installed the Cygwin packages
<filename>openssh</filename>, <filename>openssl</filename>,
-<filename>cvs</filename> and <filename>autoconf</filename>.
+<filename>cvs</filename>, <filename>m4</filename> and
+<filename>autoconf</filename>.
</para>
<Sect2><Title>Configuring ssh</Title>