diff --git a/forms/CheckboxField.php b/forms/CheckboxField.php
index 498e461ff..68e3537f3 100755
--- a/forms/CheckboxField.php
+++ b/forms/CheckboxField.php
@@ -47,7 +47,7 @@ class CheckboxField extends FormField {
 		} else {
 			extract($this->getXMLValues(array( 'Name', 'Field', 'Title', 'Message', 'MessageType' )),
 				EXTR_SKIP);
-			$messageBlock = isset($Message) ? "<span class=\"message $MessageType\">$Message</span>" : '';
+			$messageBlock = empty($Message) ? '' : "<span class=\"message $MessageType\">$Message</span>";
 			$Type = $this->XML_val('Type');
 			$extraClass = $this->XML_val('extraClass'); 
 			return <<<HTML
@@ -134,4 +134,4 @@ class CheckboxField_Disabled extends CheckboxField {
 		return $this->createTag('input', $attributes);
 	}
 }
-?>
\ No newline at end of file
+?>
