diff --git a/audio.py b/audio.py
index 32b20c44..32ab5fab 100644
--- a/audio.py
+++ b/audio.py
@@ -97,7 +97,7 @@ def _linear_to_mel(spectogram):
 
 def _build_mel_basis():
     assert hp.fmax <= hp.sample_rate // 2
-    return librosa.filters.mel(hp.sample_rate, hp.n_fft, n_mels=hp.num_mels,
+    return librosa.filters.mel(sr=hp.sample_rate, n_fft=hp.n_fft, n_mels=hp.num_mels,
                                fmin=hp.fmin, fmax=hp.fmax)
 
 def _amp_to_db(x):