diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 1fa6615b317a0616619257bbf0e82c6b4dcce9b0..2b758c935c6577c7889d859de8e710a721f089a7 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -30,9 +30,9 @@ static u64			tick_length_base;
 
 static struct hrtimer		leap_timer;
 
-#define MAX_TICKADJ		500		/* usecs */
+#define MAX_TICKADJ		500LL		/* usecs */
 #define MAX_TICKADJ_SCALED \
-  (((u64)(MAX_TICKADJ * NSEC_PER_USEC) << NTP_SCALE_SHIFT) / NTP_INTERVAL_FREQ)
+	(((MAX_TICKADJ * NSEC_PER_USEC) << NTP_SCALE_SHIFT) / NTP_INTERVAL_FREQ)
 
 /*
  * phase-lock loop variables