diff --git a/drivers/iio/adc/gpio_muxadc.c b/drivers/iio/adc/gpio_muxadc.c
index bf5e2d4b504c..3e8deb53c82c 100644
--- a/drivers/iio/adc/gpio_muxadc.c
+++ b/drivers/iio/adc/gpio_muxadc.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (c) 2018 Rockchip Electronics Co. Ltd.
+ * Copyright (c) 2018 Rockchip Electronics Co., Ltd.
  *
  * Author: Ziyuan Xu <xzy.xu@rock-chips.com>
  */