diff --git a/ports/stm32/mboot/main.c b/ports/stm32/mboot/main.c
index fcd43edc7f..a0f1f1eace 100644
--- a/ports/stm32/mboot/main.c
+++ b/ports/stm32/mboot/main.c
@@ -408,7 +408,9 @@ void mp_hal_pin_config_speed(uint32_t port_pin, uint32_t speed) {
 
 #define LED0 MICROPY_HW_LED1
 #define LED1 MICROPY_HW_LED2
+#ifdef MICROPY_HW_LED3
 #define LED2 MICROPY_HW_LED3
+#endif
 #ifdef MICROPY_HW_LED4
 #define LED3 MICROPY_HW_LED4
 #endif
@@ -416,7 +418,9 @@ void mp_hal_pin_config_speed(uint32_t port_pin, uint32_t speed) {
 void led_init(void) {
     mp_hal_pin_output(LED0);
     mp_hal_pin_output(LED1);
+    #ifdef LED2
     mp_hal_pin_output(LED2);
+    #endif
     #ifdef LED3
     mp_hal_pin_output(LED3);
     #endif
@@ -436,7 +440,9 @@ void led_state(int led, int val) {
 void led_state_all(unsigned int mask) {
     led_state(LED0, mask & 1);
     led_state(LED1, mask & 2);
+    #ifdef LED2
     led_state(LED2, mask & 4);
+    #endif
     #ifdef LED3
     led_state(LED3, mask & 8);
     #endif
@@ -1345,11 +1351,15 @@ static int pyb_usbdd_shutdown(void) {
 
 #define RESET_MODE_NUM_STATES (4)
 #define RESET_MODE_TIMEOUT_CYCLES (8)
+#ifdef LED2
 #ifdef LED3
 #define RESET_MODE_LED_STATES 0x8421
 #else
 #define RESET_MODE_LED_STATES 0x7421
 #endif
+#else
+#define RESET_MODE_LED_STATES 0x3210
+#endif
 
 static int get_reset_mode(void) {
     usrbtn_init();