diff --git a/tests/unit/catalogue/test_product_attributes.py b/tests/unit/catalogue/test_product_attributes.py
index ccd0c6d70bf..8d68d3061d0 100644
--- a/tests/unit/catalogue/test_product_attributes.py
+++ b/tests/unit/catalogue/test_product_attributes.py
@@ -1,4 +1,5 @@
 from copy import deepcopy
+
 from django.core.exceptions import ValidationError
 from django.test import TestCase