diff --git a/charger/openwb.go b/charger/openwb.go
index 01c3c248f..0e719fe7a 100644
--- a/charger/openwb.go
+++ b/charger/openwb.go
@@ -99,7 +99,7 @@ func NewOpenWB(log *util.Logger, mqttconf mqtt.Config, id int, topic string, p1p
 	// setters
 	enableS := provider.NewMqtt(log, client,
 		fmt.Sprintf("%s/set/lp%d/%s", topic, id, openwb.EnabledTopic),
-		1, timeout).BoolSetter("enable")
+		1, timeout).WithPayload("${enable:%d}").BoolSetter("enable")
 	maxcurrentS := provider.NewMqtt(log, client,
 		fmt.Sprintf("%s/set/lp%d/%s", topic, id, openwb.MaxCurrentTopic),
 		1, timeout).IntSetter("maxcurrent")