diff --git a/4.20/pde.html b/4.20/pde.html
index 5311113..58acd44 100644
--- a/4.20/pde.html
+++ b/4.20/pde.html
@@ -72,7 +72,7 @@
     <td id="pde-compiler" class="section" colspan="2"><h2>PDE Compiler</h2></td>
   </tr>
   
-    <tr id="pde-version-error-hover-detail"> <!-- https://bugs.eclipse.org/bugs/show_bug.cgi?id=562225 -->
+    <tr id="pde-version-error-hover-detail"> <!-- https://bugs.eclipse.org/bugs/show_bug.cgi?id=475708 -->
     <td class="title">The "not a perfect match" problem has a quick fix to change the BREE</td>
     <td class="content">
      The "not a perfect match" problem has a quick fix to change the BREE.