diff --git a/argocd/apps/wekan/wekan.yaml b/argocd/apps/wekan/wekan.yaml
index 3321fb1..3890733 100644
--- a/argocd/apps/wekan/wekan.yaml
+++ b/argocd/apps/wekan/wekan.yaml
@@ -40,8 +40,6 @@ spec:
           value: 'https://wekan.innovation-hub-niedersachsen.de'
         - name: PORT
           value: '80'
-        - name: MAIL_URL
-          value: 'smtp://192.168.4.125:25'
     chart: wekan
     plugin:
        env: