diff --git a/testing/test_assertrewrite.py b/testing/test_assertrewrite.py
index 8304cf057..d3c50511f 100644
--- a/testing/test_assertrewrite.py
+++ b/testing/test_assertrewrite.py
@@ -1339,9 +1339,9 @@ class TestAssertionPass:
         def raise_on_assertionpass(*_, **__):
             raise Exception("Assertion passed called when it shouldn't!")
 
-        monkeypatch.setattr(_pytest.assertion.rewrite,
-                            "_call_assertion_pass",
-                            raise_on_assertionpass)
+        monkeypatch.setattr(
+            _pytest.assertion.rewrite, "_call_assertion_pass", raise_on_assertionpass
+        )
 
         testdir.makepyfile(
             """