diff --git a/core/loadpoint.go b/core/loadpoint.go
index f198cb6da..cbe268656 100644
--- a/core/loadpoint.go
+++ b/core/loadpoint.go
@@ -110,6 +110,11 @@ func NewLoadPointFromConfig(log *util.Logger, cp configProvider, other map[strin
 	lp := NewLoadPoint()
 	util.DecodeOther(log, other, &lp)
 
+	// workaround mapstructure
+	if lp.Mode == "0" {
+		lp.Mode = api.ModeOff
+	}
+
 	if lp.ChargerRef != "" {
 		lp.charger = cp.Charger(lp.ChargerRef)
 	} else {