diff --git a/www/saml2/idp/metadata.php b/www/saml2/idp/metadata.php
index 0ea40211490802a293d5ab317a83d75db049120e..8149c9552a1c3b6debe2fb98d883443a3338a943 100644
--- a/www/saml2/idp/metadata.php
+++ b/www/saml2/idp/metadata.php
@@ -130,7 +130,7 @@ try {
     if ($idpmeta->getBoolean('saml20.ecp', false)) {
         $metaArray['SingleSignOnService'][] = array(
             'index' => 0,
-            'Binding' => SAML2_Const::BINDING_SOAP,
+            'Binding'  => Constants::BINDING_SOAP,
             'Location' => HTTP::getBaseURL().'saml2/idp/SSOService.php',
         );
     }