diff --git a/modules/audio_output/sndio.c b/modules/audio_output/sndio.c
index 642113a487..69bb0b8a42 100644
--- a/modules/audio_output/sndio.c
+++ b/modules/audio_output/sndio.c
@@ -208,6 +208,8 @@ static void Stop (audio_output_t *aout)
 {
     aout_sys_t *sys = aout->sys;
 
+    aout->volume_set = NULL;
+    aout->mute_set = NULL;
     sio_close (sys->hdl);
 }