diff --git a/variants/hackerboxes_esp32_io/variant.h b/variants/hackerboxes_esp32_io/variant.h
index 40537946a..06f0032ee 100644
--- a/variants/hackerboxes_esp32_io/variant.h
+++ b/variants/hackerboxes_esp32_io/variant.h
@@ -22,6 +22,7 @@
 #define LORA_DIO2 RADIOLIB_NC
 #define LORA_BUSY 32
 
+#define SX126X_DIO2_AS_RF_SWITCH
 #define SX126X_CS LORA_CS
 #define SX126X_DIO1 LORA_DIO1
 #define SX126X_BUSY LORA_BUSY
diff --git a/variants/hackerboxes_esp32c3_oled/variant.h b/variants/hackerboxes_esp32c3_oled/variant.h
index 91b7c6025..7432a9941 100644
--- a/variants/hackerboxes_esp32c3_oled/variant.h
+++ b/variants/hackerboxes_esp32c3_oled/variant.h
@@ -28,6 +28,7 @@
 #define LORA_DIO2 RADIOLIB_NC
 #define LORA_BUSY 10
 
+#define SX126X_DIO2_AS_RF_SWITCH
 #define SX126X_CS LORA_CS
 #define SX126X_DIO1 LORA_DIO1
 #define SX126X_BUSY LORA_BUSY