diff --git a/php/model/Article.php b/php/model/Article.php
index 4b1d492..9ffd701 100644
--- a/php/model/Article.php
+++ b/php/model/Article.php
@@ -7,13 +7,13 @@
  */
 class Article
 {
-    public $id;
-    public $title;
-    public $content;
-    public $author;
-    public $creationDate;
-    public $category;
-    public $tags;
+    private $id;
+    private $title;
+    private $content;
+    private $author;
+    private $creationDate;
+    private $category;
+    private $tags;
 
     /**
      * Konstruktor