diff --git a/documentation/preface.html b/documentation/preface.html
index a20ff3e49..9afaddd9f 100644
--- a/documentation/preface.html
+++ b/documentation/preface.html
@@ -47,6 +47,8 @@ HREF="license.html">Appendix A</A>.</B>
 
 	<LI><A HREF="fluid.html#FLUID">Chapter 9 - Programming With FLUID</A></LI>
 
+	<LI><A HREF="advanced.html#advanced">Chapter 10 - Advanced FLTK</A></LI>
+
 	<LI><A HREF="widgets.html#widgets">Appendix A - Class Reference</A></LI>
 
 	<LI><A HREF="functions.html#functions">Appendix B - Function Reference</A></LI>