diff --git a/content/updateArticle.php b/content/updateArticle.php
index fb99314..464a3e3 100644
--- a/content/updateArticle.php
+++ b/content/updateArticle.php
@@ -5,7 +5,7 @@ include_once 'php/controller/showArticle-controller.php';
     Seite: Beitrag erstellen
     Inhalt: Formular für die Erstellung eines neuen Beitrags
 -->
-<form method="post" action="php/controller/updateArticle-controller.php?id=<?php if(isset($id)){echo $id;}else{$_SESSION["message"] = "missing_id"; } ?>" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
+<form method="post" action="php/controller/updateArticle-controller.php?id=<?php if(isset($id) && !empty($id)){echo htmlspecialchars($id);}else{$_SESSION["message"] = "missing_id";} ?>" id="editor-form" class="article-editor-scope.editor-container article-editor-scope editor-container">
 
     <main class="editor-main">
         <?php if (isset($_SESSION["message"]) && $_SESSION["message"] == "internal_error"): ?>