diff --git a/audio_sndio.c b/audio_sndio.c
index 84fc6473..21ba6466 100644
--- a/audio_sndio.c
+++ b/audio_sndio.c
@@ -79,6 +79,8 @@ audio_output audio_sndio = {
 	.deinit = &deinit,
 	.start = &start,
 	.stop = &stop,
+	.flush = NULL,
+	.delay = NULL,
 	.play = &play,
 	.volume = &volume
 };