diff --git a/axe_selenium_python/tests/conftest.py b/axe_selenium_python/tests/conftest.py
index 9c569a8..cf68a28 100644
--- a/axe_selenium_python/tests/conftest.py
+++ b/axe_selenium_python/tests/conftest.py
@@ -26,18 +26,21 @@ def axe(selenium, base_url, script_url):
 
 @pytest.mark.optionalhook
 def pytest_html_results_table_header(cells):
+    """Add description and sortable time header to HTML report."""
     cells.insert(2, html.th('Description'))
     cells.insert(0, html.th('Time', class_='sortable time', col='time'))
 
 
 @pytest.mark.optionalhook
 def pytest_html_results_table_row(report, cells):
+    """Add description and sortable time column to HTML report."""
     cells.insert(2, html.td(report.description))
     cells.insert(1, html.td(datetime.utcnow(), class_='col-time'))
 
 
 @pytest.mark.hookwrapper
 def pytest_runtest_makereport(item, call):
+    """Make HTML report. Use test function docstrings as description in report."""
     outcome = yield
     report = outcome.get_result()
     # add docstring to 'description' column