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