diff --git a/drivers/iio/dac/ad5770r.c b/drivers/iio/dac/ad5770r.c
index 8107f7bbbe3c..7e2fd32e993a 100644
--- a/drivers/iio/dac/ad5770r.c
+++ b/drivers/iio/dac/ad5770r.c
@@ -522,7 +522,7 @@ static int ad5770r_channel_config(struct ad5770r_state *st)
 		return -EINVAL;
 
 	device_for_each_child_node(&st->spi->dev, child) {
-		ret = fwnode_property_read_u32(child, "num", &num);
+		ret = fwnode_property_read_u32(child, "reg", &num);
 		if (ret)
 			goto err_child_out;
 		if (num >= AD5770R_MAX_CHANNELS) {