diff --git a/ford/settings.py b/ford/settings.py
index 97c4bdb8..223c7aae 100644
--- a/ford/settings.py
+++ b/ford/settings.py
@@ -399,7 +399,7 @@ def convert_types_from_commandarguments(
     field_types = get_type_hints(type(settings))
 
     for key, value in cargs.items():
-        if value != None:
+        if value is not None:
             if key in field_types:
                 setattr(settings, key, convert_setting(field_types[key], key, value))
             else:
diff --git a/test/conftest.py b/test/conftest.py
index 63aed84b..a5771873 100644
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -1,4 +1,3 @@
-import copy
 import ford
 import pathlib
 import pytest
diff --git a/test/test_project.py b/test/test_project.py
index dca58e3b..46a614bb 100644
--- a/test/test_project.py
+++ b/test/test_project.py
@@ -12,8 +12,6 @@
 import ford.sourceform
 
 from itertools import chain
-from os.path import relpath
-import pathlib
 
 import pytest
 from bs4 import BeautifulSoup
diff --git a/test/test_projects/test_external_project.py b/test/test_projects/test_external_project.py
index 26caa6d3..78a3260d 100644
--- a/test/test_projects/test_external_project.py
+++ b/test/test_projects/test_external_project.py
@@ -2,7 +2,6 @@
 import sys
 import os
 import pathlib
-import copy
 from urllib.parse import urlparse
 import json
 from typing import Dict, Any