diff --git a/README.md b/README.md
index 10d1153f..cda309ce 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ Backends
 - PulseAudio
 - JACK
 - sndio (OpenBSD)
-- audioio (NetBSD)
+- audioio/audio(4) (NetBSD and OpenBSD)
 - OSS (FreeBSD)
 - OpenSL|ES (Android only)
 - OpenAL