diff --git a/hardware/README.md b/hardware/README.md
index 36fbc122..5a14eb43 100644
--- a/hardware/README.md
+++ b/hardware/README.md
@@ -29,7 +29,7 @@ You can also use a ESP based development board and combine this with a M-Bus mod
 - Dallas temp sensor connected to GPIO14
 
 [Adafruit HUZZAH32](https://www.adafruit.com/product/3405) 
-- M-Bus connected to RX
+- M-Bus connected to GPIO16
 
 
 Combine one of above board with an M-Bus module. Connect 3.3v and GND together between the boards and connect the TX pin from the M-Bus board to the dedicated M-Bus pin on the ESP board.
diff --git a/src/AmsToMqttBridge.h b/src/AmsToMqttBridge.h
index c3cc29ef..03084ec3 100644
--- a/src/AmsToMqttBridge.h
+++ b/src/AmsToMqttBridge.h
@@ -52,7 +52,7 @@ SoftwareSerial *hanSerial = new SoftwareSerial(D1);
 #define LED_ACTIVE_HIGH 1
 #define AP_BUTTON_PIN INVALID_BUTTON_PIN
 
-HardwareSerial *hanSerial = &Serial;
+HardwareSerial *hanSerial = &Serial2;
 
 // Default build settings
 #else