diff --git a/TTS/vocoder/layers/losses.py b/TTS/vocoder/layers/losses.py
index e1d27c24..268e6096 100644
--- a/TTS/vocoder/layers/losses.py
+++ b/TTS/vocoder/layers/losses.py
@@ -33,6 +33,7 @@ class TorchSTFT(nn.Module):  # pylint: disable=abstract-method
         self.mel_basis = None
         if use_mel:
             self._build_mel_basis()
+
     @torch.no_grad()
     def __call__(self, x):
         """Compute spectrogram frames by torch based stft.
diff --git a/TTS/vocoder/models/hifigan_discriminator.py b/TTS/vocoder/models/hifigan_discriminator.py
index 5e508a99..d506a56b 100644
--- a/TTS/vocoder/models/hifigan_discriminator.py
+++ b/TTS/vocoder/models/hifigan_discriminator.py
@@ -1,5 +1,4 @@
 # adopted from https://github.com/jik876/hifi-gan/blob/master/models.py
-
 import torch
 from torch import nn
 from torch.nn import functional as F