diff --git a/docs/en/get-started/pre-requirements.md b/docs/en/get-started/pre-requirements.md
index 8d3555fb99..8aad4818ab 100644
--- a/docs/en/get-started/pre-requirements.md
+++ b/docs/en/get-started/pre-requirements.md
@@ -108,9 +108,11 @@ If you are using Helm, you can install NGINX Ingress using the following command
 ```cs
 helm repo add ingress-nginx https://kubernetes.github.io/ingress-nginx
 helm repo update
-helm upgrade --install --version=4.0.19 ingress-nginx ingress-nginx/ingress-nginx
+helm upgrade --install --version=4.0.19 ingress-nginx ingress-nginx/ingress-nginx --set controller.config.enable-underscores-in-headers="true"
 ```
 
+> [enable-underscores-in-headers](https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/configmap/#enable-underscores-in-headers) is required to allow http request use `__tenant` to pass tenant information to the backend service.
+
 ### mkcert
 
 Use mkcert to generate trusted certificates for local development. You can install mkcert by following the [official mkcert installation guide](https://github.com/FiloSottile/mkcert#installation).