diff --git a/virtio-snd.c b/virtio-snd.c
index d0c5448..b41a1d4 100644
--- a/virtio-snd.c
+++ b/virtio-snd.c
@@ -14,7 +14,7 @@
 #define VSND_QUEUE_NUM_MAX 1024
 #define vsndq (vsnd->queues[vsnd->QueueSel])
 
-#define PRIV(x) ((struct virtio_snd_config_t *) x->priv)
+#define PRIV(x) ((virtio_snd_config_t *) x->priv)
 
 /* supported virtio sound version */
 enum {
@@ -721,11 +721,14 @@ bool virtio_snd_init(virtio_snd_state_t *vsnd)
 
     audio_host = CNFAInit(NULL, "semu-virtio-snd", virtio_snd_cb, 44100, 0, 1,
                           0, 1024, NULL, NULL, &guest_playing);
-
     if (!audio_host) {
         fprintf(stderr, "virtio-snd driver initialization failed.\n");
         return false;
     }
 
+    PRIV(vsnd)->jacks = 1;
+    PRIV(vsnd)->streams = 1;
+    PRIV(vsnd)->chmaps = 1;
+
     return true;
 }