diff --git a/stable/kube-lego/README.md b/stable/kube-lego/README.md
index 2f5668029a..bc230748fd 100644
--- a/stable/kube-lego/README.md
+++ b/stable/kube-lego/README.md
@@ -44,7 +44,7 @@ The following table lists the configurable parameters of the chart and their def
 Parameter | Description | Default
 --------- | ----------- | -------
 `config.LEGO_EMAIL` | email address to use for registration with Let's Encrypt | none
-`config.LEGO_URL` | Let's Encrypt API endpoint | `https://acme-staging.api.letsencrypt.org/directory` (staging)
+`config.LEGO_URL` | Let's Encrypt API endpoint. To get "real" certificates set to the production API of Let's Encrypt: https://acme-v01.api.letsencrypt.org/directory | `https://acme-staging.api.letsencrypt.org/directory` (staging)
 `config.LEGO_PORT` | kube-lego port | `8080`
 `image.repository` | kube-lego container image repository | `jetstack/kube-lego`
 `image.tag` | kube-lego container image tag | `0.1.3`