diff --git a/plateau/b9.htm b/plateau/b9.htm
index e21ed76ab..c9a9961af 100644
--- a/plateau/b9.htm
+++ b/plateau/b9.htm
@@ -21,7 +21,7 @@ website.
 <img alt="---&gt;" src="../../icons/lists/1.png">
 <a href="../areas.htm">Other areas</a><br>
 <img alt="------&gt;" src="../../icons/lists/2.png">
-<a href="index.htm#190">Plateau area index</a>
+<a href="index.htm#id190">Plateau area index</a>
 
 </body>
 </html>