diff --git a/libraries/LoRaWAN/examples/LoRaWAN_TTN_ABP/LoRaWAN_TTN_ABP.ino b/libraries/LoRaWAN/examples/LoRaWAN_TTN_ABP/LoRaWAN_TTN_ABP.ino
index 3646546a..584dd1c7 100644
--- a/libraries/LoRaWAN/examples/LoRaWAN_TTN_ABP/LoRaWAN_TTN_ABP.ino
+++ b/libraries/LoRaWAN/examples/LoRaWAN_TTN_ABP/LoRaWAN_TTN_ABP.ino
@@ -1,4 +1,4 @@
-/* Simple ABB join for TheThingNetwork LoRaWAN network
+/* Simple ABP join for TheThingNetwork LoRaWAN network
  *
  *  Uncomment one of the region defined below to select the
  *  proper radio setup.
@@ -89,6 +89,9 @@ void setup( void )
     LoRaWAN.setSubBand(2);
 #endif
 
+    Serial.begin(9600);
+    while (!Serial) {}
+
     // LoRaWAN.setDutyCycle(false);     
     // LoRaWAN.setAntennaGain(2.0);
     LoRaWAN.joinABP(devAddr, nwkSKey, appSKey);