diff --git a/aws/README.md b/aws/README.md
index 6ef34d3..83904b3 100644
--- a/aws/README.md
+++ b/aws/README.md
@@ -54,7 +54,7 @@ List of default usernames:
 | --- | --- |
 | Ubuntu (`Ubuntu *.04`) |  `ubuntu` |
 | Debian (`Debian 9`) | `admin` |
-| CentOS (`CenOS 7/8`) | `centos` |
+| CentOS (`CenOS 7`) | `centos` |
 | Amazon Linux 2 | `ec2-user` |
 
 This template generates a key pair for you during deployment, and the private key will be available as text under the **Outputs** tab after the stack is successfully created.