diff --git a/drivers/iio/adc/ad9467.c b/drivers/iio/adc/ad9467.c
index 863dca5db161..4c08f8a04f96 100644
--- a/drivers/iio/adc/ad9467.c
+++ b/drivers/iio/adc/ad9467.c
@@ -225,11 +225,11 @@ static void __ad9467_get_scale(struct ad9467_state *st, int index,
 }
 
 static const struct iio_chan_spec ad9434_channels[] = {
-	AD9467_CHAN(0, 0, 12, 'S'),
+	AD9467_CHAN(0, 0, 12, 's'),
 };
 
 static const struct iio_chan_spec ad9467_channels[] = {
-	AD9467_CHAN(0, 0, 16, 'S'),
+	AD9467_CHAN(0, 0, 16, 's'),
 };
 
 static const struct ad9467_chip_info ad9467_chip_tbl = {