diff --git a/drivers/iio/adc/ad9467.c b/drivers/iio/adc/ad9467.c
index 6b9627bfebb0..4fd74e2847f0 100644
--- a/drivers/iio/adc/ad9467.c
+++ b/drivers/iio/adc/ad9467.c
@@ -223,11 +223,11 @@ static void __ad9467_get_scale(struct adi_axi_adc_conv *conv, 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[] = {