diff --git a/php/controller/updateArticle-controller.php b/php/controller/updateArticle-controller.php
index 086de7e..3a40f5c 100644
--- a/php/controller/updateArticle-controller.php
+++ b/php/controller/updateArticle-controller.php
@@ -10,15 +10,19 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
     $_SESSION["old_content"]  = $_POST["content"] ?? '';
     $_SESSION["old_category"] = $_POST["category"] ?? '';
     $_SESSION["old_tags"]     = $_POST["tags"] ?? '';
-    try {
+
+    if (isset($_GET["id"]) && !empty($_GET["id"])) {
         $id = $_GET["id"];
-    } catch (Exception $e){
+    } else {
         $_SESSION["message"] = "missing_id";
+        header("location: ../../index.php?pfad=updateArticle");
+        exit();
     }
+
     if (!isset($_POST["title"]) ||!isset($_POST["content"]) || !isset($_POST["category"])){
         $_SESSION["message"] = "missing_parameters";
-    } elseif(!isset($id)) {
-        $_SESSION["message"] = "missing_id";
+        header("location: ../../index.php?pfad=updateArticle");
+        exit();
     }else{
         $title = $_POST["title"];
         $content = $_POST["content"];
@@ -33,31 +37,31 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
         // -------------------------------- Validierung der Daten: -------------------------
         if (!articleAuthorValidator($author)) {
             $_SESSION["message"] = "author_not_valid";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         }
 
         if (!articleTitleValidator($title)) {
             $_SESSION["message"] = "invalid_title";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         }
 
         if (!articleContentValidator($content)) {
             $_SESSION["message"] = "invalid_content";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         }
 
         if (!articleCategoryValidator($category)) {
             $_SESSION["message"] = "invalid_category";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         }
 
-        if (!articleTagValidator($_POST["tags"])) {
+        if (!articleTagValidator($tags)) {
             $_SESSION["message"] = "invalid_tags";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         } else {
             $cleanedTags = [];
@@ -65,10 +69,11 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             foreach ($rawTags as $rawTag) {
                 // Leerzeichen am Anfang/Ende des einzelnen Tags entfernen:
                 $tag = trim($rawTag);
-                // Duplikate entfernen:
-                $cleanedTags = array_unique($cleanedTags);
-                $cleanedTags = implode(',', $cleanedTags);
+                $cleanedTags[] = $tag;
             }
+            // Duplikate entfernen:
+            $cleanedTags = array_unique($cleanedTags);
+            $cleanedTags = implode(',', $cleanedTags);
         }
 
         // ----------------- Übertragung der validierten Daten in ArticleManager: ---------------------------
@@ -82,7 +87,7 @@ if ($_SERVER["REQUEST_METHOD"] === "POST") {
             $articleManager->updateArticle($id ,$article, $author);
         } catch (Exception $e){
             $_SESSION["message"] = "internal_error";
-            header("location: ../../index.php?pfad=createArticle");
+            header("location: ../../index.php?pfad=updateArticle");
             exit();
         }
         $_SESSION["message"] = "article_updated";