--- a/3rdpartycode.xml
+++ b/3rdpartycode.xml
@@ -32,7 +32,7 @@
   <dt><a href="http://www.mines.edu/fs_home/whereman/software.html">Misc code by Willy Hereman et. al.</a></dt>
   <dd>A series of interesting Macsyma packages. Commercial use is not permitted without consent of the authors.</dd>
 
-  <dt><a href="http://maxima-project.org/wiki/index.php?title=Pw.mac">Pw.mac</a></dt>
+  <dt><a href="http://sourceforge.net/apps/mediawiki/piecewisefunc/index.php?title=Main_Page">Pw.mac</a></dt>
   <dd>The package pw.mac extends Maxima by enabling it to work with piecewise continuous functions.</dd>
 
   <dt><a href="http://www.johnlapeyre.com/qinf/index.html">Qinf</a> (quantum information and entanglement package)</dt>