diff --git a/lib/Cake/View/XmlView.php b/lib/Cake/View/XmlView.php
index e3a8b7af6..1bf5419ed 100644
--- a/lib/Cake/View/XmlView.php
+++ b/lib/Cake/View/XmlView.php
@@ -14,6 +14,7 @@
 
 App::uses('View', 'View');
 App::uses('Xml', 'Utility');
+App::uses('Hash', 'Utility');
 
 /**
  * A view class that is used for creating XML responses.
@@ -124,7 +125,7 @@ class XmlView extends View {
 			}
 		} else {
 			$data = isset($this->viewVars[$serialize]) ? $this->viewVars[$serialize] : null;
-			if (is_array($data) && Set::numeric(array_keys($data))) {
+			if (is_array($data) && Hash::numeric(array_keys($data))) {
 				$data = array($rootNode => array($serialize => $data));
 			}
 		}