diff --git a/manifests/mailu/values.yaml b/manifests/mailu/values.yaml
index ffa3e14..63e7891 100644
--- a/manifests/mailu/values.yaml
+++ b/manifests/mailu/values.yaml
@@ -8,6 +8,7 @@ ingress:
   annotations:
     traefik.ingress.kubernetes.io/router.entrypoints: "web,websecure"
     traefik.ingress.kubernetes.io/router.tls: "true"
+    nginx.ingress.kubernetes.io/backend-protocol: ""
   hosts:
     - host: mail.dvirlabs.com
       paths: