diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 587d251..8b3cd31 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -156,6 +156,8 @@
 	strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
 	snprintf(rtc->dev.bus_id, BUS_ID_SIZE, "rtc%d", id);
 
+	rtc_dev_prepare(rtc);
+
 	err = device_register(&rtc->dev);
 	if (err)
 		goto exit_kfree;