diff --git a/application/applicationcontext.class.inc.php b/application/applicationcontext.class.inc.php
index 04e43c1bb..350619cb1 100644
--- a/application/applicationcontext.class.inc.php
+++ b/application/applicationcontext.class.inc.php
@@ -54,7 +54,7 @@ class ApplicationContext
 	 */
 	protected function ReadContext()
 	{
-		if (empty(self::$aDefaultValues))
+		if (!isset(self::$aDefaultValues))
 		{
 			self::$aDefaultValues = array();
 			$aContext = utils::ReadParam('c', array());