diff --git a/argocd/apps/mattermost/mattermnost.yaml b/argocd/apps/mattermost/mattermnost.yaml
index 8121dd4..11a5a05 100644
--- a/argocd/apps/mattermost/mattermnost.yaml
+++ b/argocd/apps/mattermost/mattermnost.yaml
@@ -39,17 +39,21 @@ spec:
         externalDB:
           enabled: false
         
-        # Extra Environment Variables
+        # WICHTIG: Verwende keine config.json oder configJSON
+        # Nur Environment Variables
         extraEnvVars:
+          - name: MM_SERVICESETTINGS_SITEURL
+            value: "https://mattermost.innovation-hub-niedersachsen.de"
+          - name: MM_SERVICESETTINGS_LISTENADDRESS
+            value: ":8065"
           - name: MM_SQLSETTINGS_DRIVERNAME
             value: "mysql"
           - name: MM_SQLSETTINGS_DATASOURCE
             value: "mmdbuser:mmdbpwd@tcp(mattermost-mysql:3306)/mattermost?charset=utf8mb4,utf8&readTimeout=30s&writeTimeout=30s"
         
-        # Mattermost Configuration
-        configJSON:
-          ServiceSettings:
-            SiteURL: "https://mattermost.innovation-hub-niedersachsen.de"
+        # Deaktiviere das automatische Config Secret
+        # Damit MM_CONFIG nicht gesetzt wird
+        extraInitContainers: []
   
   destination:
     server: 'https://kubernetes.default.svc'