diff --git a/pytest_sphinx.py b/pytest_sphinx.py
index b08d375..353dbb2 100644
--- a/pytest_sphinx.py
+++ b/pytest_sphinx.py
@@ -130,9 +130,7 @@ def _split_into_body_and_options(section_content):
                     option[0] not in "+-"
                     or option[1:] not in doctest.OPTIONFLAGS_BY_NAME
                 ):
-                    raise ValueError(
-                        f"doctest has an invalid option {option}"
-                    )
+                    raise ValueError(f"doctest has an invalid option {option}")
                 flag = doctest.OPTIONFLAGS_BY_NAME[option[1:]]
                 flag_settings[flag] = option[0] == "+"
             i += 1
diff --git a/tests/test_text_files.py b/tests/test_text_files.py
index 23ecaf1..8abee8e 100644
--- a/tests/test_text_files.py
+++ b/tests/test_text_files.py
@@ -220,7 +220,6 @@ def test_doctest_directive(testdir):
     result = testdir.runpytest()
     result.stdout.fnmatch_lines(["*=== 1 passed in *"])
 
-
     testdir.maketxtfile(
         test_something="""
         This is a paragraph. This is the
@@ -234,4 +233,3 @@ def test_doctest_directive(testdir):
 
     result = testdir.runpytest()
     result.stdout.fnmatch_lines(["*=== 1 failed in *"])
-