diff --git a/pre_commit_hooks/string_fixer.py b/pre_commit_hooks/string_fixer.py
index fc1e17d..91d012e 100644
--- a/pre_commit_hooks/string_fixer.py
+++ b/pre_commit_hooks/string_fixer.py
@@ -61,7 +61,7 @@ def fix_strings(filename: str, replace_single_quotes: bool = False) -> int:
             fstring_depth -= 1
         elif fstring_depth == 0 and token_type == tokenize.STRING:
             new_text = handle_match(
-                token_text, replace_single_quotes=replace_single_quotes
+                token_text, replace_single_quotes=replace_single_quotes,
             )
             splitcontents[
                 line_offsets[srow] + scol:
@@ -92,7 +92,7 @@ def main(argv: Sequence[str] | None = None) -> int:
 
     for filename in args.filenames:
         return_value = fix_strings(
-            filename, replace_single_quotes=args.replace_single_quotes
+            filename, replace_single_quotes=args.replace_single_quotes,
         )
         if return_value != 0:
             print(f'Fixing strings in {filename}')
diff --git a/tests/string_fixer_test.py b/tests/string_fixer_test.py
index 8d104d7..e9d3c0c 100644
--- a/tests/string_fixer_test.py
+++ b/tests/string_fixer_test.py
@@ -71,7 +71,7 @@ TESTS = (
 
 
 @pytest.mark.parametrize(
-    ('input_s', 'output', 'reversed_case', 'expected_retval'), TESTS
+    ('input_s', 'output', 'reversed_case', 'expected_retval'), TESTS,
 )
 def test_rewrite(input_s, output, reversed_case, expected_retval, tmpdir):
     path = tmpdir.join('file.py')
@@ -79,7 +79,7 @@ def test_rewrite(input_s, output, reversed_case, expected_retval, tmpdir):
 
     argv = [str(path)]
     if reversed_case:
-        argv.append("--replace-single-quotes")
+        argv.append('--replace-single-quotes')
     retval = main(argv)
 
     assert path.read() == output