diff --git a/src/hal/lopy.h b/src/hal/lopy.h
index 11b3cff2..0da195e6 100644
--- a/src/hal/lopy.h
+++ b/src/hal/lopy.h
@@ -11,8 +11,8 @@
 #define PIN_SPI_SCK   GPIO_NUM_5
 #define RST   GPIO_NUM_18
 #define DIO0  GPIO_NUM_23 // LoRa IRQ
-#define DIO1  GPIO_NUM_23 // workaround
-#define DIO2  LMIC_UNUSED_PIN
+#define DIO1  GPIO_NUM_23 // Pin tied via diode to DIO0
+#define DIO2  GPIO_NUM_23 // Pin tied via diode to DIO0
 
 // select WIFI antenna (internal = onboard / external = u.fl socket)
 #define HAS_ANTENNA_SWITCH  16      // pin for switching wifi antenna
diff --git a/src/hal/lopy4.h b/src/hal/lopy4.h
index 1b14d8d1..37ac3f0e 100644
--- a/src/hal/lopy4.h
+++ b/src/hal/lopy4.h
@@ -12,8 +12,8 @@
 #define PIN_SPI_SCK   GPIO_NUM_5
 #define RST   LMIC_UNUSED_PIN
 #define DIO0  GPIO_NUM_23 // LoRa IRQ
-#define DIO1  GPIO_NUM_23 // workaround
-#define DIO2  LMIC_UNUSED_PIN
+#define DIO1  GPIO_NUM_23 // Pin tied via diode to DIO0
+#define DIO1  GPIO_NUM_23 // Pin tied via diode to DIO0
 
 // select WIFI antenna (internal = onboard / external = u.fl socket)
 #define HAS_ANTENNA_SWITCH  21      // pin for switching wifi antenna