diff --git a/php/model/ArticleManager.php b/php/model/ArticleManager.php
index 8962aa3..488ad30 100644
--- a/php/model/ArticleManager.php
+++ b/php/model/ArticleManager.php
@@ -1,5 +1,6 @@
 <?php
 require_once 'LocalArticleManager.php';
+require_once 'DatabaseArticleManager.php'
 require_once 'Article.php';
 
 /**
@@ -7,7 +8,7 @@ require_once 'Article.php';
  *
  * @author Niklas Ortmann
  */
-class ArticleManager extends LocalArticleManager
+class ArticleManager
 {
     public static function getInstance()
     {