diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
index c3e7bac1312318470f29c805ca2ccdcfb6790402..e45712a921ce600cee7c10aa2d8a4dcbc46fccba 100644
--- a/drivers/iio/light/lm3533-als.c
+++ b/drivers/iio/light/lm3533-als.c
@@ -404,7 +404,7 @@ static int lm3533_als_get_hysteresis(struct iio_dev *indio_dev, unsigned nr,
 	return ret;
 }
 
-static int show_thresh_either_en(struct device *dev,
+static ssize_t show_thresh_either_en(struct device *dev,
 					struct device_attribute *attr,
 					char *buf)
 {
@@ -424,7 +424,7 @@ static int show_thresh_either_en(struct device *dev,
 	return scnprintf(buf, PAGE_SIZE, "%u\n", enable);
 }
 
-static int store_thresh_either_en(struct device *dev,
+static ssize_t store_thresh_either_en(struct device *dev,
 					struct device_attribute *attr,
 					const char *buf, size_t len)
 {