diff --git a/reference/pdo/reference.xml b/reference/pdo/reference.xml
index 9870bc9a3a..1f8035930e 100644
--- a/reference/pdo/reference.xml
+++ b/reference/pdo/reference.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='iso-8859-1'?>
-<!-- $Revision: 1.47 $ -->
+<!-- $Revision: 1.48 $ -->
 <!-- Purpose: database.abstract -->
 <!-- Membership: pecl, bundled -->
 
@@ -149,13 +149,14 @@ extension=php_pdo.dll
      </step>
      <step>
       <para>
-       Next, choose the other DB specific DLL files and either use 
+       Next, choose the other database-specific DLL files and either use 
        <function>dl</function> to load them at runtime, or enable them in
        &php.ini; below <filename>php_pdo.dll</filename>. For example:
        <screen>
 <![CDATA[
 extension=php_pdo.dll
 extension=php_pdo_firebird.dll
+extension=php_pdo_informix.dll
 extension=php_pdo_mssql.dll
 extension=php_pdo_mysql.dll
 extension=php_pdo_oci.dll
@@ -169,6 +170,8 @@ extension=php_pdo_sqlite.dll
       <para>
        These DLLs should exist in the system's 
        <link linkend="ini.extension-dir">extension_dir</link>.
+       Note that <link linkend="ref.pdo-informix">PDO_INFORMIX</link>
+       is only available as a PECL extension.
       </para>
      </step>
     </procedure>