@ -207,7 +207,7 @@ public class JsonMqttAdaptor implements MqttTransportAdaptor {
try {
return new JsonParser().parse(payload);
} catch (JsonSyntaxException ex) {
log.error("Payload is in incorrect format: " + payload);
log.error("Payload is in incorrect format: {}", payload);
throw new AdaptorException(ex);
}