diff --git a/variants/heltec_v1/variant.h b/variants/heltec_v1/variant.h
index 25cb1407..9ea07eb0 100644
--- a/variants/heltec_v1/variant.h
+++ b/variants/heltec_v1/variant.h
@@ -3,7 +3,7 @@
 #undef GPS_RX_PIN
 #undef GPS_TX_PIN
 #define GPS_RX_PIN 36
-#define GPS_TX_PIN 37
+#define GPS_TX_PIN 33
 
 #ifndef USE_JTAG  // gpio15 is TDO for JTAG, so no I2C on this board while doing jtag
 #define I2C_SDA 4 // I2C pins for this board
@@ -20,8 +20,8 @@
 #ifndef USE_JTAG
 #define LORA_RESET 14
 #endif
-#define LORA_DIO1 33 // Not really used
-#define LORA_DIO2 32 // Not really used
+#define LORA_DIO1 35 // Not really used
+#define LORA_DIO2 34 // Not really used
 
 // ratio of voltage divider = 3.20 (R1=100k, R2=220k)
 #define ADC_MULTIPLIER 3.2
diff --git a/variants/heltec_v2/variant.h b/variants/heltec_v2/variant.h
index 76b7314b..e5981fd6 100644
--- a/variants/heltec_v2/variant.h
+++ b/variants/heltec_v2/variant.h
@@ -3,7 +3,7 @@
 #undef GPS_RX_PIN
 #undef GPS_TX_PIN
 #define GPS_RX_PIN 36
-#define GPS_TX_PIN 37
+#define GPS_TX_PIN 33
 
 #ifndef USE_JTAG  // gpio15 is TDO for JTAG, so no I2C on this board while doing jtag
 #define I2C_SDA 4 // I2C pins for this board