diff --git a/code/CMSMain.php b/code/CMSMain.php
index 3862c655..35d8cd03 100755
--- a/code/CMSMain.php
+++ b/code/CMSMain.php
@@ -562,7 +562,7 @@ JS;
 
 		// DataObject::fieldExists only checks the current class, not the hierarchy
 		// This allows the CMS to set the correct sort value
-		if($newItem->castingHelperPair('Sort')) {
+		if($newItem->castingHelper('Sort')) {
 			$newItem->Sort = DB::query("SELECT MAX(\"Sort\") FROM \"SiteTree\" WHERE \"ParentID\" = '" . Convert::raw2sql($parentID) . "'")->value() + 1;
 		}