diff --git a/stm-firmware/main.c b/stm-firmware/main.c
index 5f8bfce..a7702ac 100644
--- a/stm-firmware/main.c
+++ b/stm-firmware/main.c
@@ -130,8 +130,10 @@ static bool mount_sd_card_if_avail(bool mounted)
 	if (!sdio_check_inserted() && !mounted && inserted_counter > 4) {
 		inserted_counter = 0;
 		res = f_mount(fs_ptr, "0:/", 1);
-		if (res == FR_OK)
+		if (res == FR_OK) {
+			led_set(1, 1);
 			return true;
+		}
 		else
 			return false;
 	}
@@ -217,15 +219,10 @@ int main(void)
 	while (1) {
 
 		if (systick_ticks_have_passed(quarter_sec_timestamp, 250)) {
+			led_set(1, 0);
 			sd_old = sd_card_mounted;
 			sd_card_mounted = mount_sd_card_if_avail(sd_card_mounted);
 
-			if (sd_old != sd_card_mounted) {
-				led_set(0, 1);
-			} else {
-				led_set(0, 0);
-			}
-
 			if (sd_card_mounted && !sd_old) {
 				adc_pt1000_get_resistance_calibration(NULL, NULL, &cal_active);
 				if (!cal_active) {