diff --git a/README.md b/README.md
index 3ec2c8b..3ac5d9c 100644
--- a/README.md
+++ b/README.md
@@ -96,6 +96,12 @@ You can download the pre-compiled binaries from the
 ## LAST UPDATE
 Added a new metric called "service_openvpn" which is quite simple : if the openvpn service is up/active, equals 1. If not, equals 0.
 Added a script that restart automatically if he sees a change on the openvpn service with the help of "systemctl is-active --quiet" that returns an exit code if it's active.
+It should look like this on your http://localip:9176/metrics page :
+```
+# HELP service_openvpn Indicates whether the OpenVPN service is up (1) or down (0).
+# TYPE service_openvpn gauge
+service_openvpn 1
+```
 
 ## Exemple on how to use it :