diff --git a/platformio.ini b/platformio.ini
index d9b77444..8a7ed235 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -11,11 +11,11 @@
 
 ; ---> SELECT TARGET PLATFORM HERE! <---
 [platformio]
-env_default = generic
+;env_default = generic
 ;env_default = heltec
 ;env_default = ttgov1
 ;env_default = ttgov2
-;env_default = ttgov21
+env_default = ttgov21
 ;env_default = ttgobeam
 ;env_default = lopy
 ;env_default = lopy4
diff --git a/src/hal/ttgobeam.h b/src/hal/ttgobeam.h
index 8984d203..913f3a16 100644
--- a/src/hal/ttgobeam.h
+++ b/src/hal/ttgobeam.h
@@ -22,4 +22,5 @@
 #define RST LMIC_UNUSED_PIN // connected to ESP32 RST/EN
 #define DIO0 GPIO_NUM_26    // ESP32 GPIO26 <-> HPD13A IO0
 #define DIO1 GPIO_NUM_32 // Lora1 <-> HPD13A IO1 // !! NEEDS EXTERNAL WIRING !!
+//#define DIO1 GPIO_NUM_33 // Lora1 <-> HPD13A IO1 // for T-Beam T22_V05 only
 #define DIO2 LMIC_UNUSED_PIN // Lora2 <-> HPD13A IO2 // not needed for LoRa