diff --git a/src/TTGO_T-Beam_LoRa_APRS.ino b/src/TTGO_T-Beam_LoRa_APRS.ino
index 79dfe09..a6d9bd8 100644
--- a/src/TTGO_T-Beam_LoRa_APRS.ino
+++ b/src/TTGO_T-Beam_LoRa_APRS.ino
@@ -54,12 +54,20 @@
   #define BUTTON  39                //pin number for Button on TTGO T-Beam
   #define BUZZER 15                 // enter your buzzer pin gpio
   const byte TXLED  = 4;            //pin number for LED on TX Tracker
+/* Original LORA32 V2.1 Setup
 #elif LORA32_21
   #define I2C_SDA 4
   #define I2C_SCL 15
   #define BUTTON 2                  //pin number for BUTTO
   #define BUZZER 13                 // enter your buzzer pin gpio
   const byte TXLED  = 4;            //pin number for LED on TX Tracker
+*/
+#elif LORA32_21                     // Modified as in #47
+  #define I2C_SDA 21
+  #define I2C_SCL 22
+  #define BUTTON 2                  //pin number for BUTTO
+  #define BUZZER 13                 // enter your buzzer pin gpio
+  const byte TXLED  = 4;            //pin number for LED on TX Tracker
 #elif LORA32_2
   #define I2C_SDA 21
   #define I2C_SCL 22