diff --git a/docs/examples/auth/client-certs/README.md b/docs/examples/auth/client-certs/README.md
index ba38beaab..73a4555f3 100644
--- a/docs/examples/auth/client-certs/README.md
+++ b/docs/examples/auth/client-certs/README.md
@@ -92,8 +92,12 @@ tls:
     secretName: tls-secret
 ```
 
-| :exclamation: In future releases, CN verification seems to be "replaced" by SAN (Subject Alternate Name) for verrification |
-|----------------------------------------------------------------------------------------------------------------------------|
+| :exclamation: In future releases, CN verification seems to be "replaced" by SAN (Subject Alternate Name) for verrification, so do not forget to add |
+|-----------------------------------------------------------------------------------------------------------------------------------------------------|
+
+```bash
+openssl req -addext "subjectAltName = DNS:mydomain.com" ...
+```
 
 ## 4. Example / Test