diff --git a/chapters/install.xml b/chapters/install.xml
index bb93c41c75..cc2072e8c1 100644
--- a/chapters/install.xml
+++ b/chapters/install.xml
@@ -1,5 +1,5 @@
 <?xml encoding="iso-8859-1"?>
-<!-- $Revision: 1.80 $ -->
+<!-- $Revision: 1.81 $ -->
  <chapter id="installation">
   <title>Installation</title>
 
@@ -146,7 +146,7 @@
      When PHP is configured, you are ready to build the CGI executable.
      The command <command>make</command> should
      take care of this.  If it fails and you can't figure out why, see
-     the <link linkend="install-problems">Problems section</link>.
+     the <link linkend="install.problems">Problems section</link>.
     </simpara>
    </sect2>
   </sect1>
@@ -3021,7 +3021,7 @@ $ /usr/local/sbin/php4-enable
 
   </sect1>
 
-  <sect1 id="install-windows">
+  <sect1 id="install.windows">
    <title>Installation on Windows 9x/Me/NT/2000 systems</title>
    <para>
     There are two main ways to install PHP for Windows: either
@@ -4768,7 +4768,7 @@ Init fn="php4_init" LateInit="yes"
    </para>
   </sect1>
 
-  <sect1 id="install-problems">
+  <sect1 id="install.problems">
    <title>Problems?</title>
 
    <sect2>