diff --git a/hw/9pfs/virtio-9p.c b/hw/9pfs/virtio-9p.c
index 01cf337..35d8851 100644
--- a/hw/9pfs/virtio-9p.c
+++ b/hw/9pfs/virtio-9p.c
@@ -1279,7 +1279,7 @@ static void v9fs_stat(void *opaque)
     if (err < 0) {
         goto out;
     }
-    offset += pdu_marshal(pdu, offset, "wS", 0, &v9stat);
+    offset += pdu_marshal(pdu, offset, "S", &v9stat);
     err = offset;
     trace_v9fs_stat_return(pdu->tag, pdu->id, v9stat.mode,
                            v9stat.atime, v9stat.mtime, v9stat.length);