diff --git a/include/admin/installer.inc.php b/include/admin/installer.inc.php
index e58b4f87..6eee268d 100644
--- a/include/admin/installer.inc.php
+++ b/include/admin/installer.inc.php
@@ -160,6 +160,12 @@ if ( (int)$serendipity['GET']['step'] == 0 ) {
         $data['installerResultDiagnose_MBSTR'] =  serendipity_installerResultDiagnose(S9Y_I_WARNING, NO);
     }
 
+    if ( extension_loaded('xml') ) {
+        $data['installerResultDiagnose_XML'] =  serendipity_installerResultDiagnose(S9Y_I_SUCCESS, YES);
+    } else {
+        $data['installerResultDiagnose_XML'] =  serendipity_installerResultDiagnose(S9Y_I_WARNING, NO);
+    }
+
     if ( extension_loaded('iconv') ) {
         $data['installerResultDiagnose_ICONV'] =  serendipity_installerResultDiagnose(S9Y_I_SUCCESS, YES);
     } else {
diff --git a/templates/2k11/admin/installer.inc.tpl b/templates/2k11/admin/installer.inc.tpl
index 65c72c33..b291f98e 100644
--- a/templates/2k11/admin/installer.inc.tpl
+++ b/templates/2k11/admin/installer.inc.tpl
@@ -95,6 +95,10 @@
                             <td>mbstring extension</td>
                             <td>{$installerResultDiagnose_MBSTR}</td>
                         </tr>
+                        <tr>
+                            <td>xml extension</td>
+                            <td>{$installerResultDiagnose_XML}</td>
+                        </tr>
                         <tr>
                             <td>iconv extension</td>
                             <td>{$installerResultDiagnose_ICONV}</td>