diff --git a/drivers/md/dm-delay.c b/drivers/md/dm-delay.c
index 42c3a27..57b6a19 100644
--- a/drivers/md/dm-delay.c
+++ b/drivers/md/dm-delay.c
@@ -236,7 +236,7 @@
 	delayed = dm_per_bio_data(bio, sizeof(struct dm_delay_info));
 
 	delayed->context = dc;
-	delayed->expires = expires = jiffies + (delay * HZ / 1000);
+	delayed->expires = expires = jiffies + msecs_to_jiffies(delay);
 
 	mutex_lock(&delayed_bios_lock);