diff --git a/tests/basic/test_main.py b/tests/basic/test_main.py
index b450c6e06..9f74dc6a4 100644
--- a/tests/basic/test_main.py
+++ b/tests/basic/test_main.py
@@ -767,32 +767,32 @@ class TestMain(TestCase):
             repo = git.Repo(git_dir)  # Re-open repo to ensure we get fresh config
             self.assertEqual(repo.git.config("user.name"), "Included User")
             self.assertEqual(repo.git.config("user.email"), "included@example.com")
-            
+
     def test_git_config_include_directive(self):
         # Test that aider respects the include directive in git config
         with GitTemporaryDirectory() as git_dir:
             git_dir = Path(git_dir)
-            
+
             # Create an includable config file with user settings
             include_config = git_dir / "included.gitconfig"
             include_config.write_text(
                 "[user]\n    name = Directive User\n    email = directive@example.com\n"
             )
-            
+
             # Set up main git config with include directive
             git_config = git_dir / ".git" / "config"
             original_config = git_config.read_text()
             with open(git_config, "a") as f:
-                f.write(f'\n[include]\n    path = {include_config}\n')
-            
+                f.write(f"\n[include]\n    path = {include_config}\n")
+
             # Verify the config is set up correctly
             repo = git.Repo(git_dir)
             self.assertEqual(repo.git.config("user.name"), "Directive User")
             self.assertEqual(repo.git.config("user.email"), "directive@example.com")
-            
+
             # Run aider and verify it doesn't change the git config
             main(["--yes", "--exit"], input=DummyInput(), output=DummyOutput())
-            
+
             # Check that the user settings are still the same
             repo = git.Repo(git_dir)  # Re-open repo to ensure we get fresh config
             self.assertEqual(repo.git.config("user.name"), "Directive User")