diff --git a/stm-firmware/adc-meas.c b/stm-firmware/adc-meas.c
index d92ae02..40ae789 100644
--- a/stm-firmware/adc-meas.c
+++ b/stm-firmware/adc-meas.c
@@ -199,12 +199,12 @@ void adc_pt1000_set_resistance_calibration(float offset, float sensitivity_devia
 
 void adc_pt1000_get_resistance_calibration(float *offset, float *sensitivity_deviation, bool *active)
 {
-	if (!offset || !sensitivity_deviation || !active)
-		return;
-
-	*offset = pt1000_offset;
-	*sensitivity_deviation = pt1000_sens_dev;
-	*active = calibration_active;
+	if (offset)
+		*offset = pt1000_offset;
+	if (sensitivity_deviation)
+		*sensitivity_deviation = pt1000_sens_dev;
+	if (active)
+		*active = calibration_active;
 }
 
 static inline float adc_pt1000_apply_calibration(float raw_resistance)
diff --git a/stm-firmware/settings/settings-sd-card.c b/stm-firmware/settings/settings-sd-card.c
index 0b0b565..292346c 100644
--- a/stm-firmware/settings/settings-sd-card.c
+++ b/stm-firmware/settings/settings-sd-card.c
@@ -161,7 +161,7 @@ int sd_card_settings_try_load_calibration(float *sens_deviation, float *offset)
 {
 	char path[128];
 	int status;
-	int ret = -2;
+	int ret = 0;
 
 	if (!sens_deviation || !offset)
 		return -1000;