diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 4ed8ba9384db..3755a81c1efd 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -454,6 +454,7 @@ config AD7779
 	depends on SPI
 	select CRC8
 	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	select IIO_BACKEND
 	help
 	  Say yes here to build support for Analog Devices AD777X family