diff --git a/scripts/fast-reboot b/scripts/fast-reboot
index 24b818a25d..0990551e5a 100755
--- a/scripts/fast-reboot
+++ b/scripts/fast-reboot
@@ -902,6 +902,7 @@ sleep 1
 sync
 
 # sync the current system time to CMOS
+systemctl stop hwclock.service hwclock.timer
 if [ -x /sbin/hwclock ]; then
     /sbin/hwclock -w || /bin/true
 fi
diff --git a/scripts/reboot b/scripts/reboot
index 044334af3e..379d0379ac 100755
--- a/scripts/reboot
+++ b/scripts/reboot
@@ -255,6 +255,7 @@ sync
 sleep 3
 
 # sync the current system time to CMOS
+systemctl stop hwclock.service hwclock.timer
 if [ -x /sbin/hwclock ]; then
     /sbin/hwclock -w || /bin/true
 fi