aubio_source_t *s;
if (new_aubio_source(0, samplerate, hop_size)) return 1;
- if (new_aubio_source('\0', samplerate, hop_size)) return 1;
+ if (new_aubio_source("\0", samplerate, hop_size)) return 1;
if (new_aubio_source(uri, -1, hop_size)) return 1;
if (new_aubio_source(uri, 0, 0)) return 1;