diff --git a/scripts/integrate-distro.sh b/scripts/integrate-distro.sh
index 7fe55791..1d69c2a9 100644
--- a/scripts/integrate-distro.sh
+++ b/scripts/integrate-distro.sh
@@ -817,10 +817,13 @@ unmount_devices()
 	local devices="$ssh_auth_sock /srv/ftp /proc /sys /dev /boot /"
 	[ "$1" ] && devices="$@"
 	local sync=/usr/bin/sync
-	[ -x $root/$sync ] && run_chroot $sync
+	[ -x $root/$sync ] || sync=""
 	local d
 	for d in $devices; do
-		check_mount $d && run umount $root$d
+		check_mount $d && {
+			[ "$sync" -a -e $root$d ] && run $sync -f $root$d
+			run umount $root$d
+		}
 	done
 	rm -f $ssh_auth_sock
 }