diff --git a/examples/knx-sonoffS20/knx-sonoffS20.ino b/examples/knx-sonoffS20/knx-sonoffS20.ino
index c69c0bd..17cd4f7 100644
--- a/examples/knx-sonoffS20/knx-sonoffS20.ino
+++ b/examples/knx-sonoffS20/knx-sonoffS20.ino
@@ -24,8 +24,8 @@ void switchCallback(GroupObject& go)
 
 void setup()
 {
-    SerialDBG.begin(115200);
-    ArduinoPlatform::SerialDebug = SerialDBG;
+    Serial.begin(115200);
+    ArduinoPlatform::SerialDebug = Serial;
 
 #ifdef ARDUINO_ARCH_ESP8266
     WiFiManager wifiManager;