diff --git a/tests/reporters/test_html.py b/tests/reporters/test_html.py
index 728c0d6..570c61d 100644
--- a/tests/reporters/test_html.py
+++ b/tests/reporters/test_html.py
@@ -378,9 +378,15 @@ def test_report_html_output(
         report_folder.__truediv__.assert_has_calls(
             [
                 mock.call("index.html"),
-                mock.call().write_text(env.get_template.return_value.render.return_value.strip.return_value, encoding="utf-8"),
+                mock.call().write_text(
+                    env.get_template.return_value.render.return_value.strip.return_value,
+                    encoding="utf-8",
+                ),
                 mock.call(module["report_file"]),
-                mock.call().write_text(env.get_template.return_value.render.return_value.strip.return_value, encoding="utf-8"),
+                mock.call().write_text(
+                    env.get_template.return_value.render.return_value.strip.return_value,
+                    encoding="utf-8",
+                ),
             ]
         )