diff --git a/virtio-snd.c b/virtio-snd.c
index d7f35f8..9dfc7e1 100644
--- a/virtio-snd.c
+++ b/virtio-snd.c
@@ -549,7 +549,6 @@ static void virtio_snd_read_pcm_start(const virtio_snd_pcm_hdr_t *query,
     }
 
     /* Control the callback to start playing */
-    /* TODO: add lock to avoid race condition */
     vsnd_props[stream_id].pp.hdr.hdr.code = VIRTIO_SND_R_PCM_START;
     v.guest_playing++;
     pthread_cond_signal(&virtio_snd_ctrl_cond);
@@ -573,7 +572,6 @@ static void virtio_snd_read_pcm_stop(const virtio_snd_pcm_hdr_t *query,
     }
 
     /* Control the callback to stop playing */
-    /* TODO: add lock to avoid race condition */
     vsnd_props[stream_id].pp.hdr.hdr.code = VIRTIO_SND_R_PCM_STOP;
     v.guest_playing--;
     pthread_cond_signal(&virtio_snd_ctrl_cond);