diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 9583cbc..c404b61 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -143,6 +143,7 @@
 	rtc->id = id;
 	rtc->ops = ops;
 	rtc->owner = owner;
+	rtc->irq_freq = 1;
 	rtc->max_user_freq = 64;
 	rtc->dev.parent = dev;
 	rtc->dev.class = rtc_class;