diff --git a/appendix.htm b/appendix.htm
index 62f81851..0f5455b2 100644
--- a/appendix.htm
+++ b/appendix.htm
@@ -1285,7 +1285,7 @@ href="mailto:John_Maddock@compuserve.com">John_Maddock@compuserve.com</a>,
 the home page for this library is at <a
 href="http://ourworld.compuserve.com/homepages/John_Maddock/regexpp.htm">http://ourworld.compuserve.com/homepages/John_Maddock/regexpp.htm</a>,
 and the official boost version can be obtained from <a
-href="http://www.boost.org/libraries">www.boost.org/libraries</a>.
+href="http://www.boost.org/libraries.htm">www.boost.org/libraries.htm</a>.
 </p>
 
 <p>I am indebted to Robert Sedgewick's &quot;Algorithms in C++&quot;