diff --git a/ports/stm32/mboot/ui.c b/ports/stm32/mboot/ui.c
index 9924ecd0ba..c1fea55da5 100644
--- a/ports/stm32/mboot/ui.c
+++ b/ports/stm32/mboot/ui.c
@@ -67,7 +67,7 @@ static led0_state_t led0_cur_state = LED0_STATE_OFF;
 static uint32_t led0_ms_interval = 0;
 static int led0_toggle_count = 0;
 
-MP_WEAK void led_init(void) {
+void led_init(void) {
     #if defined(MBOOT_BOARD_LED_INIT)
     // Custom LED init function provided by the board.
     MBOOT_BOARD_LED_INIT();
@@ -88,7 +88,7 @@ MP_WEAK void led_init(void) {
     led0_cur_state = LED0_STATE_OFF;
 }
 
-MP_WEAK void led_state(uint32_t led, int val) {
+static void led_state(uint32_t led, int val) {
     #if defined(MBOOT_BOARD_LED_STATE)
     // Custom LED state function provided by the board.
     return MBOOT_BOARD_LED_STATE(led, val);
@@ -115,7 +115,7 @@ void led_state_all(unsigned int mask) {
     #endif
 }
 
-void led0_state(led0_state_t state) {
+static void led0_state(led0_state_t state) {
     led0_cur_state = state;
     if (state == LED0_STATE_OFF || state == LED0_STATE_ON) {
         led_state(LED0, state);