diff --git a/framework/yii/base/Event.php b/framework/yii/base/Event.php
index 4ba8c7d..9845c77 100644
--- a/framework/yii/base/Event.php
+++ b/framework/yii/base/Event.php
@@ -157,7 +157,7 @@ class Event extends Object
 			return;
 		}
 		if ($event === null) {
-			$event = new self;
+			$event = new static;
 		}
 		$event->handled = false;
 		$event->name = $name;