diff --git a/dep/sddf b/dep/sddf
index 2cae425f..b53b104d 160000
--- a/dep/sddf
+++ b/dep/sddf
@@ -1 +1 @@
-Subproject commit 2cae425f735d6dd214bdb285e89275a87625bba3
+Subproject commit b53b104df3bd66d5820c489318960acec7a97775
diff --git a/src/virtio/console.c b/src/virtio/console.c
index c21311a9..35f585d4 100644
--- a/src/virtio/console.c
+++ b/src/virtio/console.c
@@ -140,7 +140,7 @@ static bool virtio_console_handle_tx(struct virtio_device *dev)
                     transferred = true;
                 }
 
-                memcpy(console->txq.data_region + (console->txq.queue->tail % console->txq.size),
+                memcpy(console->txq.data_region + (console->txq.queue->tail % console->txq.capacity),
                        (char *)(desc.addr + (desc.len - bytes_remain)), to_transfer);
 
                 serial_update_visible_tail(&console->txq, console->txq.queue->tail + to_transfer);