diff --git a/matcha/hifigan/models.py b/matcha/hifigan/models.py
index 94b0ce9..57305ef 100644
--- a/matcha/hifigan/models.py
+++ b/matcha/hifigan/models.py
@@ -1,8 +1,8 @@
 """ from https://github.com/jik876/hifi-gan """
 
 import torch
-import torch.nn.functional as F
 import torch.nn as nn  # pylint: disable=consider-using-from-import
+import torch.nn.functional as F
 from torch.nn import AvgPool1d, Conv1d, Conv2d, ConvTranspose1d
 from torch.nn.utils import remove_weight_norm, spectral_norm, weight_norm