diff --git a/php/controller/showArticle-controller.php b/php/controller/showArticle-controller.php
index 6c1e929..27174dc 100644
--- a/php/controller/showArticle-controller.php
+++ b/php/controller/showArticle-controller.php
@@ -26,7 +26,7 @@ if (isset($_GET["id"]) && !empty($_GET["id"])){
         }
 
         if($_GET["pfad"] == "updateArticle"){
-            if($article->getAuthor() != $_SESSION["user"]){
+            if($article->getAuthor() != $_SESSION["user_email"]){
                 $_SESSION["message"] = "unauthorized_access";
                 header("location: ../../index.php");
                 exit();