diff --git a/src/ExampleMetric/GenericMixedMetric.php b/src/ExampleMetric/GenericMixedMetric.php
index cba7497..7c7e07e 100644
--- a/src/ExampleMetric/GenericMixedMetric.php
+++ b/src/ExampleMetric/GenericMixedMetric.php
@@ -39,7 +39,7 @@ class GenericMixedMetric
 	 *
 	 * date("Y-m-d H:i:s")
 	 * 
-	 * @var DateTime 
+	 * @var \DateTime 
 	 */
 	public $datetime;