diff --git a/hw/9pfs/xen-9p-backend.c b/hw/9pfs/xen-9p-backend.c
index 79359d911a..ca0fff5fa9 100644
--- a/hw/9pfs/xen-9p-backend.c
+++ b/hw/9pfs/xen-9p-backend.c
@@ -310,7 +310,7 @@ static void xen_9pfs_bh(void *opaque)
 
 again:
     wait = ring->co != NULL && qemu_coroutine_entered(ring->co);
-    /* paired with the smb_wmb barriers in xen_9pfs_init_in_iov_from_pdu */
+    /* paired with the smp_wmb barriers in xen_9pfs_init_in_iov_from_pdu */
     smp_rmb();
     if (wait) {
         cpu_relax();