Index: porters-handbook/upgrading/chapter.xml
===================================================================
--- porters-handbook/upgrading/chapter.xml
+++ porters-handbook/upgrading/chapter.xml
@@ -271,8 +271,9 @@
 	after the patch is applied.</para>
     </note>
 
-    <para>Send the patch following the guidelines in
-      <xref linkend="port-upgrading"/>.</para>
+    <para>Send the patch following the <link
+	xlink:href="&url.articles.problem-reports;/pr-writing.html">problem
+	report submission guidelines</link>.</para>
 
     <tip>
       <para>The patch can be automatically generated and the PR