diff --git a/chapters/install.configure.misc.xml b/chapters/install.configure.misc.xml
index 295fb17f92..a4145ef7d6 100644
--- a/chapters/install.configure.misc.xml
+++ b/chapters/install.configure.misc.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.10 $ -->
+<!-- $Revision: 1.11 $ -->
  <sect3 id="install.configure.options.misc">
   <title>Misc options</title>
   <variablelist>
@@ -97,34 +97,14 @@ code!
     </listitem>
    </varlistentry>
 
-   <varlistentry id="install.configure.with-ircg-config">
-    <term>
-     <parameter>--with-ircg-config</parameter>
-    </term>
-    <listitem>
-     <para>
-      Path to the ircg-config script.
-     </para>
-    </listitem>
-   </varlistentry>
-   <varlistentry id="install.configure.with-ircg">
-    <term>
-     <parameter>--with-ircg</parameter>
-    </term>
-    <listitem>
-     <para>
-      Include ircg support.
-     </para>
-    </listitem>
-   </varlistentry>
-
    <varlistentry id="install.configure.enable-trans-sid">
     <term>
      <parameter>--enable-trans-sid</parameter>
     </term>
     <listitem>
      <para>
-      Enable transparent session id propagation.
+      Enable transparent session id propagation. Only valid for PHP 4.1.2 or
+      less. From PHP 4.2.0, trans-sid feature is always compiled.
      </para>
     </listitem>
    </varlistentry>