diff --git a/sobolev_alignment/kernel_operations.py b/sobolev_alignment/kernel_operations.py
index 5227c98..0773f7e 100644
--- a/sobolev_alignment/kernel_operations.py
+++ b/sobolev_alignment/kernel_operations.py
@@ -5,6 +5,7 @@
 
 Custom scripts for specific matrix operations.
 """
+
 import numpy as np