diff --git a/lib/appframework/dependencyinjection/dicontainer.php b/lib/appframework/dependencyinjection/dicontainer.php
index 380a0ee6d4a2dada164c5395bbfd8e5558c4a854..3755d45fa092dd1b44f8dfc62f9f3eafee23c536 100644
--- a/lib/appframework/dependencyinjection/dicontainer.php
+++ b/lib/appframework/dependencyinjection/dicontainer.php
@@ -43,7 +43,7 @@ class DIContainer extends SimpleContainer implements IAppContainer{
 	/**
 	 * @var array
 	 */
-	private $middleWares;
+	private $middleWares = array();
 
 	/**
 	 * Put your class dependencies in here