diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 8d2dd214ec68..b1ba80ce8496 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -796,7 +796,7 @@ int __do_adjtimex(struct __kernel_timex *txc, const struct timespec64 *ts,
 		txc->offset = shift_right(time_offset * NTP_INTERVAL_FREQ,
 				  NTP_SCALE_SHIFT);
 		if (!(time_status & STA_NANO))
-			txc->offset = (u32)txc->offset / NSEC_PER_USEC;
+			txc->offset = div_s64(txc->offset, NSEC_PER_USEC);
 	}
 
 	result = time_state;	/* mostly `TIME_OK' */