diff --git a/code/UserDefinedForm.php b/code/UserDefinedForm.php
index 49aebcb..3564985 100755
--- a/code/UserDefinedForm.php
+++ b/code/UserDefinedForm.php
@@ -299,7 +299,7 @@ class UserDefinedForm_Controller extends Page_Controller {
$fieldToAdd->addExtraClass('requiredField');
if(self::$required_identifier) {
- $fieldToAdd->setLeftTitle($fieldToAdd->getLeftTitle . ' '. self::$required_identifier . '');
+ $fieldToAdd->setLeftTitle($fieldToAdd->getLeftTitle . ' '. UserDefinedForm::$required_identifier . '');
}
}