diff --git a/fhem/docs/HOWTO.html b/fhem/docs/HOWTO.html
index 868d0fd75..8515445ca 100644
--- a/fhem/docs/HOWTO.html
+++ b/fhem/docs/HOWTO.html
@@ -335,6 +335,9 @@
       and then restart httpd with apachectl graceful. To create the password
       file, execute<br>
       htpasswd -c /home/httpd/etc/passwd &lt;username&gt;
+      <br>
+      See also <a href="http://fhemwiki.de/index.php/Apache_Authentication_Proxy">
+      this</a> fhemwiki entry for a more detailed description.
       <br><br>
 
       To enable HTTPS, please check the web. In essence:<br>