diff --git a/bundles/org.openhab.binding.openwebnet/README.md b/bundles/org.openhab.binding.openwebnet/README.md
index d51539c82..4d52e82dc 100644
--- a/bundles/org.openhab.binding.openwebnet/README.md
+++ b/bundles/org.openhab.binding.openwebnet/README.md
@@ -457,7 +457,7 @@ sitemap openwebnet label="OpenWebNet Binding Example Sitemap"
     Frame label="Alarm"
     {
          Switch  item=iAlarm_System_State       label="Alarm state"
-         Switch  item=iAlarm_Control            label="Arm/Disarm alarm"   icon="shield"
+         Switch  item=iAlarm_Control            label="Arm/Disarm alarm"   icon="shield" mappings=[OFF="Disarmed",ON="Armed"]
          Switch  item=iAlarm_System_Armed       label="Armed"              icon="shield"
          Switch  item=iAlarm_System_Network     label="Network"            icon="network"
          Default item=iAlarm_System_Battery     label="Battery"            icon="battery"