diff --git a/website/download.html b/website/download.html
index 0de2e0cf..2f998d8a 100644
--- a/website/download.html
+++ b/website/download.html
@@ -142,6 +142,8 @@
 	preferable to use a Xapian version after 1.0.12 as they don't
 	need the <a href="BUGS.html#XapianNearPatch">NEAR patch</a>
 	any more.</p>
+      <p>You will also need the development files for libX11 and zlib.</p>
+
       <table>
 	<tr><td valign="top">Qt:</td>
 	  <td>