diff --git a/tests/test_losses.py b/tests/test_losses.py
index d456261..78e7a2c 100644
--- a/tests/test_losses.py
+++ b/tests/test_losses.py
@@ -1,4 +1,5 @@
 """ Test loss functions"""
+
 from dgmr.losses import SSIMLoss, MS_SSIMLoss, SSIMLossDynamic, tv_loss
 import torch