diff --git a/tests/CultureFeed/Cdb/Item/EventTest.php b/tests/CultureFeed/Cdb/Item/EventTest.php
index 1348bfb..1819852 100644
--- a/tests/CultureFeed/Cdb/Item/EventTest.php
+++ b/tests/CultureFeed/Cdb/Item/EventTest.php
@@ -1376,7 +1376,7 @@ private function generateXmlWithNoCdbXmlRootElementButWithNSOnRootElement(
         $eventElements = $dom->getElementsByTagName('event');
 
         /* @var DOMElement $eventElement */
-        $eventElement = $eventElements[0];
+        $eventElement = $eventElements->item(0);
         $eventElement->setAttribute(
             'xmlns',
             CultureFeed_Cdb_Xml::namespaceUriForVersion($nsVersion)