diff --git a/src/drivers/ams/Kconfig b/src/drivers/ams/Kconfig
index 6729443611..30e86672ae 100644
--- a/src/drivers/ams/Kconfig
+++ b/src/drivers/ams/Kconfig
@@ -6,7 +6,9 @@ config DRIVERS_AS3722_RTC
 config DRIVERS_AS3722_RTC_BUS
 	int "AS3722 RTC bus"
 	depends on DRIVERS_AS3722_RTC
+	default 0
 
 config DRIVERS_AS3722_RTC_ADDR
 	hex "AS3722 RTC chip address"
 	depends on DRIVERS_AS3722_RTC
+	default 0x00