diff --git a/readme-vars.yml b/readme-vars.yml
index c435f1f..dd8eac5 100644
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -38,7 +38,7 @@ opt_param_env_vars:
   - { env_var: "PROPAGATION", env_value: "", desc: "Optionally override (in seconds) the default propagation time for the dns plugins." }
   - { env_var: "EMAIL", env_value: "", desc: "Optional e-mail address used for cert expiration notifications (Required for ZeroSSL)." }
   - { env_var: "ONLY_SUBDOMAINS", env_value: "false", desc: "If you wish to get certs only for certain subdomains, but not the main domain (main domain may be hosted on another machine and cannot be validated), set this to `true`" }
-  - { env_var: "EXTRA_DOMAINS", env_value: "", desc: "Additional fully qualified domain names (comma separated, no spaces) ie. `example.net,subdomain.example.org,*.example.org`" }
+  - { env_var: "EXTRA_DOMAINS", env_value: "", desc: "Additional fully qualified domain names (comma separated, no spaces) ie. `example.net,subdomain.example.net,*.example.org`" }
   - { env_var: "STAGING", env_value: "false", desc: "Set to `true` to retrieve certs in staging mode. Rate limits will be much higher, but the resulting cert will not pass the browser's security test. Only to be used for testing purposes." }
 opt_param_usage_include_ports: true
 opt_param_ports: