diff --git a/content/rancher/v2.x/en/installation/single-node/_index.md b/content/rancher/v2.x/en/installation/single-node/_index.md
index 2b0a0f5e51a..47698fbfd5f 100644
--- a/content/rancher/v2.x/en/installation/single-node/_index.md
+++ b/content/rancher/v2.x/en/installation/single-node/_index.md
@@ -67,7 +67,10 @@ docker run -d --restart=unless-stopped \
 
 In production environments where you're exposing an app publicly, use a certificate signed by a recognized CA so that your user base doesn't encounter security warnings.
 
->**Prerequisite:** The certificate files must be in [PEM format](#pem).
+>**Prerequisites:**
+>
+>- The certificate files must be in [PEM format](#pem).
+>- In your certificate file, include all intermediate certificates provided by the recognized CA. Order your certificates with your certificate first, followed by the intermediates. For an example, see [SSL FAQ / Troubleshooting](#cert-order).
 
 After obtaining your certificate, run the Docker command below.