snd_pcm_format_name: return NULL on unsupported

1 files changed, 1 insertions, 1 deletions

diff --git a/src/pcm.c b/src/pcm.c
index 48ccaf0..36a9bc8 100644
--- a/src/pcm.c
+++ b/src/pcm.c
@@ -483,7 +483,7 @@ snd_pcm_format_name(const snd_pcm_format_t format)
       NAME(SND_PCM_FORMAT_FLOAT_BE);
       default:
          WARNX("unsupported format: 0x%x", format);
-         return "unsupported";
+         return NULL;
    }
 #undef NAME
 }