diff --git a/argocd/apps/mattermost/mattermnost.yaml b/argocd/apps/mattermost/mattermnost.yaml
index 18095b3..9c839ff 100644
--- a/argocd/apps/mattermost/mattermnost.yaml
+++ b/argocd/apps/mattermost/mattermnost.yaml
@@ -30,21 +30,23 @@ spec:
         # MySQL Database Configuration
         mysql:
           enabled: true
-          existingSecret: mattermost-db-credentials
+          mysqlRootPassword: "InnoHubMYSQL_2025!"
+          mysqlUser: "mmdbuser"
+          mysqlPassword: "mmdbpwd"
           mysqlDatabase: "mattermost"
         
         # Disable External Database
         externalDB:
           enabled: false
         
-        # Mattermost Configuration
+        # Mattermost Configuration - WICHTIG: Ohne DataSource!
         configJSON:
           ServiceSettings:
             SiteURL: "https://mattermost.innovation-hub-niedersachsen.de"
             ListenAddress: ":8065"
           SqlSettings:
             DriverName: "mysql"
-            DataSourceReplicas: []
+            # DataSource wird automatisch vom Chart generiert - NICHT manuell setzen!
   
   destination:
     server: 'https://kubernetes.default.svc'