diff --git a/tasmota/tasmota_support/settings.ino b/tasmota/tasmota_support/settings.ino
index 36dc971e7..6b2e9e376 100644
--- a/tasmota/tasmota_support/settings.ino
+++ b/tasmota/tasmota_support/settings.ino
@@ -992,6 +992,7 @@ void SettingsDefaultSet2(void) {
   flag5.mqtt_status_retain |= MQTT_STATUS_RETAIN;
   flag5.mqtt_switches |= MQTT_SWITCHES;
   flag5.mqtt_persistent |= ~MQTT_CLEAN_SESSION;
+  flag6.mqtt_sserialreceived |= MQTT_SSERIALRECEIVED;
 //  flag.mqtt_serial |= 0;
   flag.device_index_enable |= MQTT_POWER_FORMAT;
   flag3.time_append_timezone |= MQTT_APPEND_TIMEZONE;