diff --git a/tests/functional/openlp_core_ui/test_maindisplay.py b/tests/functional/openlp_core_ui/test_maindisplay.py
index 7e9feff48..17325b59a 100644
--- a/tests/functional/openlp_core_ui/test_maindisplay.py
+++ b/tests/functional/openlp_core_ui/test_maindisplay.py
@@ -34,6 +34,7 @@ from openlp.core.ui.maindisplay import TRANSPARENT_STYLESHEET, OPAQUE_STYLESHEET
 from tests.helpers.testmixin import TestMixin
 from tests.functional import MagicMock, patch
 
+
 class TestMainDisplay(TestCase, TestMixin):
 
     def setUp(self):