diff --git a/example/1.6/cs/handler.go b/example/1.6/cs/handler.go
index 7ea7b4ff..fe231ee8 100644
--- a/example/1.6/cs/handler.go
+++ b/example/1.6/cs/handler.go
@@ -78,7 +78,7 @@ func (handler *CentralSystemHandler) OnBootNotification(chargePointId string, re
 }
 
 func (handler *CentralSystemHandler) OnDataTransfer(chargePointId string, request *core.DataTransferRequest) (confirmation *core.DataTransferConfirmation, err error) {
-	logDefault(chargePointId, request.GetFeatureName()).Infof("received data %d", request.Data)
+	logDefault(chargePointId, request.GetFeatureName()).Infof("received data %v", request.Data)
 	return core.NewDataTransferConfirmation(core.DataTransferStatusAccepted), nil
 }