diff --git a/README.md b/README.md
index 8271df0..debe3ec 100644
--- a/README.md
+++ b/README.md
@@ -197,8 +197,10 @@ This CloudFormation template will configure the IdP for you.
 ```yaml
 Parameters:
   GitHubOrg:
+    Description: Name of GitHub organization/user (case sensitive)
     Type: String
   RepositoryName:
+    Description: Name of GitHub repository (case sensitive)
     Type: String
   OIDCProviderArn:
     Description: Arn for the GitHub OIDC Provider.