diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 7af60b9..a04c1b6 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -271,7 +271,7 @@
 		dev_dbg(&rtc->dev, "alarm rollover: %s\n", "year");
 		do {
 			alarm->time.tm_year++;
-		} while (!rtc_valid_tm(&alarm->time));
+		} while (rtc_valid_tm(&alarm->time) != 0);
 		break;
 
 	default: