diff --git a/basicts/metrics/__init__.py b/basicts/metrics/__init__.py
index 4d88ba8..66e465b 100644
--- a/basicts/metrics/__init__.py
+++ b/basicts/metrics/__init__.py
@@ -1,11 +1,11 @@
+from .corr import masked_corr
 from .mae import masked_mae
 from .mape import masked_mape
 from .mse import masked_mse
+from .r_square import masked_r2
 from .rmse import masked_rmse
-from .wape import masked_wape
 from .smape import masked_smape
-from .r_square import masked_r2
-from .corr import masked_corr
+from .wape import masked_wape
 
 ALL_METRICS = {
             'MAE': masked_mae,
diff --git a/basicts/metrics/smape.py b/basicts/metrics/smape.py
index 48e4166..ebc2308 100644
--- a/basicts/metrics/smape.py
+++ b/basicts/metrics/smape.py
@@ -1,5 +1,6 @@
-import torch
 import numpy as np
+import torch
+
 
 def masked_smape(prediction: torch.Tensor, target: torch.Tensor, null_val: float = np.nan) -> torch.Tensor:
     """