diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
index d23ed60..42adc05 100644
--- a/net/9p/trans_virtio.c
+++ b/net/9p/trans_virtio.c
@@ -201,7 +201,7 @@
 {
 	struct virtio_chan *chan = trans->priv;
 	int count;
-	unsigned int flags;
+	unsigned long flags;
 
 	spin_lock_irqsave(&chan->lock, flags);
 	p9_idpool_destroy(chan->tagpool);