diff --git a/application/controllers/components/CisVue.php b/application/controllers/components/CisVue.php
index 537537f08..b5433ebfe 100644
--- a/application/controllers/components/CisVue.php
+++ b/application/controllers/components/CisVue.php
@@ -31,7 +31,8 @@ class CisVue extends FHC_Controller
 	public function Menu()
 	{
 		$this->load->model('content/Content_model', 'ContentModel');
-		$result = $this->ContentModel->getMenu(defined('CIS4_MENU_ENTRY') ? CIS4_MENU_ENTRY : null, get_uid());
+		$menu_contentID = $this->ContentModel->getMenuContentID();
+		$result = $this->ContentModel->getMenu($menu_contentID, get_uid());
 		$menu = getData($result) ?? (object)['childs' => []];
 
 		$this->outputJsonSuccess($menu);
diff --git a/application/models/content/Content_model.php b/application/models/content/Content_model.php
index 9f0a3634e..278022b59 100644
--- a/application/models/content/Content_model.php
+++ b/application/models/content/Content_model.php
@@ -71,13 +71,23 @@ class Content_model extends DB_Model
 	 *
 	 * @return integer|null			content_id of the Cis4_Root Menu
 	 */
-	public function getCIS4_ContentID(){
+	public function getMenuContentID(){
+		// early return if the CIS4_MENU_ENTRY constant is defined  
+		if(defined('CIS4_MENU_ENTRY'))
+		{
+			return CIS4_MENU_ENTRY;
+		}
+		
+		// load the CIS4 Menu content_id from the database using the column 'beschreibugn' of the campus.tbl_content table
 		$CIS4_ROOT_CONTENT = $this->loadWhere(["beschreibung"=>"CIS4_ROOT"]);
+		
 		if(isError($CIS4_ROOT_CONTENT))
 		{
 			return null;
 		}
+
 		$CIS4_ROOT_CONTENT = getData($CIS4_ROOT_CONTENT);
+		
 		if(count($CIS4_ROOT_CONTENT) > 0)
 		{
 			return current($CIS4_ROOT_CONTENT)->content_id ?? null;
diff --git a/application/views/templates/CISVUE-Header.php b/application/views/templates/CISVUE-Header.php
index 6ee344391..70f9a173f 100644
--- a/application/views/templates/CISVUE-Header.php
+++ b/application/views/templates/CISVUE-Header.php
@@ -19,7 +19,7 @@ $this->load->view('templates/FHC-Header', $includesArray);
 if (!isset($menu)) {
 	$ci =& get_instance(); // get CI instance
 	$ci->load->model('content/Content_model', 'ContentModel');
-	$cis4_content_id = $ci->ContentModel->getCIS4_ContentID();
+	$cis4_content_id = $ci->ContentModel->getMenuContentID();
 	$result = $ci->ContentModel->getMenu($cis4_content_id, get_uid());
 	$menu = getData($result)->childs ?? [];
 }