diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index 6eddb099b0..0049a2c0b3 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -70,7 +70,7 @@ static void vhost_dev_sync_region(struct vhost_dev *dev,
     uint64_t end = MIN(mlast, rlast);
     vhost_log_chunk_t *from = log + start / VHOST_LOG_CHUNK;
     vhost_log_chunk_t *to = log + end / VHOST_LOG_CHUNK + 1;
-    uint64_t addr = (start / VHOST_LOG_CHUNK) * VHOST_LOG_CHUNK;
+    uint64_t addr = QEMU_ALIGN_DOWN(start, VHOST_LOG_CHUNK);
 
     if (end < start) {
         return;