diff --git a/doc/adminguide.html b/doc/adminguide.html
index 44e5aa8f..f0abea36 100755
--- a/doc/adminguide.html
+++ b/doc/adminguide.html
@@ -84,7 +84,8 @@ Contributions</a> section.<p>
 <h3><hr><i>Installation from the tarball</i>:</h3>
 
 <p>
-<a href="http://midas.psi.ch/elog/download/">Download</a> the latest <code><b>elog-x.x.x.tar.gz</code></B> package.
+<a href="http://midas.psi.ch/elog/download/">Download</a> the latest <code><b>elog-x.x.x.tar.gz</code></B> package.<p>
+Make sure you have the <b>libssl-dev</b> package installed. Consult your distribution for details.
 <p>
 Expand the compressed TAR file with <code><b>tar -xzvf elog-x.x.x.tar.gz</code></B>.
 This creates a subdirectory <code><b>elog-x.x.x</b></code> where x.x.x is the