diff --git a/tests/functional/openlp_core/common/test_common.py b/tests/functional/openlp_core/common/test_common.py
index bd3e627c4..72dee447a 100644
--- a/tests/functional/openlp_core/common/test_common.py
+++ b/tests/functional/openlp_core/common/test_common.py
@@ -25,8 +25,8 @@ Functional tests to test the AppLocation class and related methods.
 from unittest import TestCase
 from unittest.mock import MagicMock, call, patch
 
-from openlp.core.common import (clean_button_text, de_hump, extension_loader, is_macosx, is_linux,
-                                is_win, normalize_str, path_to_module, trace_error_handler)
+from openlp.core.common import clean_button_text, de_hump, extension_loader, is_macosx, is_linux, \
+    is_win, normalize_str, path_to_module, trace_error_handler
 from openlp.core.common.path import Path
 
 
@@ -213,25 +213,25 @@ class TestCommonFunctions(TestCase):
 
     def test_normalize_str_leaves_newlines(self):
         # GIVEN: a string containing newlines
-        str = 'something\nelse'
+        string = 'something\nelse'
         # WHEN: normalize is called
-        normalized_string = normalize_str(str)
+        normalized_string = normalize_str(string)
         # THEN: string is unchanged
-        assert normalized_string == str
+        assert normalized_string == string
 
     def test_normalize_str_removes_null_byte(self):
         # GIVEN: a string containing newlines
-        str = 'somet\x00hing'
+        string = 'somet\x00hing'
         # WHEN: normalize is called
-        normalized_string = normalize_str(str)
+        normalized_string = normalize_str(string)
         # THEN: string is unchanged
         assert normalized_string == 'something'
 
     def test_normalize_str_replaces_crlf_with_lf(self):
         # GIVEN: a string containing crlf
-        str = 'something\r\nelse'
+        string = 'something\r\nelse'
         # WHEN: normalize is called
-        normalized_string = normalize_str(str)
+        normalized_string = normalize_str(string)
         # THEN: crlf is replaced with lf
         assert normalized_string == 'something\nelse'