diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index dc4c2748bbc38bfac593cc47a2ff7bac6a34c8fe..37b1d82fda085551b2823b01e984cee03c4d6d24 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -238,6 +238,7 @@ void rtc_device_unregister(struct rtc_device *rtc)
 		rtc_proc_del_device(rtc);
 		device_unregister(&rtc->dev);
 		rtc->ops = NULL;
+		ida_simple_remove(&rtc_ida, rtc->id);
 		mutex_unlock(&rtc->ops_lock);
 		put_device(&rtc->dev);
 	}