diff --git a/tests/test_models_dbi_utils.py b/tests/test_models_dbi_utils.py
index 1c7f825c01..89e2ce9b0d 100644
--- a/tests/test_models_dbi_utils.py
+++ b/tests/test_models_dbi_utils.py
@@ -1,4 +1,5 @@
 """"Testing utils for DoubleBracketIteration model"""
+
 import numpy as np
 import pytest