diff --git a/drivers/leds/leds-turris-omnia.c b/drivers/leds/leds-turris-omnia.c
index 096ed7b81957adefcdae65ed8f8d270f5f83c6ec..c0b4e1e0e94515ee78085a2e44d822136cb61a86 100644
--- a/drivers/leds/leds-turris-omnia.c
+++ b/drivers/leds/leds-turris-omnia.c
@@ -174,10 +174,10 @@ static ssize_t brightness_store(struct device *dev, struct device_attribute *a,
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct omnia_leds *leds = i2c_get_clientdata(client);
-	unsigned int brightness;
+	unsigned long brightness;
 	int ret;
 
-	if (sscanf(buf, "%u", &brightness) != 1)
+	if (kstrtoul(buf, 10, &brightness))
 		return -EINVAL;
 
 	if (brightness > 100)