diff --git a/drivers/staging/iio/iio_hwmon.c b/drivers/staging/iio/iio_hwmon.c
index c7a5f97..97ad645 100644
--- a/drivers/staging/iio/iio_hwmon.c
+++ b/drivers/staging/iio/iio_hwmon.c
@@ -93,7 +93,7 @@
 	while (st->channels[st->num_channels].indio_dev)
 		st->num_channels++;
 
-	st->attrs = kzalloc(sizeof(st->attrs) * (st->num_channels + 1),
+	st->attrs = kzalloc(sizeof(*st->attrs) * (st->num_channels + 1),
 			    GFP_KERNEL);
 	if (st->attrs == NULL) {
 		ret = -ENOMEM;