diff --git a/hypothesis-python/tests/nocover/test_build_signature.py b/hypothesis-python/tests/nocover/test_build_signature.py
index 146a6ccd6a..15bee1b4fe 100644
--- a/hypothesis-python/tests/nocover/test_build_signature.py
+++ b/hypothesis-python/tests/nocover/test_build_signature.py
@@ -53,7 +53,9 @@ def use_annotations(
     pass
 
 
-def use_signature(self, testA: int, testB: str = None, *, testX: float, testY: List[str]):
+def use_signature(
+    self, testA: int, testB: str = None, *, testX: float, testY: List[str]
+):
     pass
 
 
@@ -75,7 +77,7 @@ def test_build_using_different_signature_and_annotations(val):
     assert isinstance(val, ModelWithAlias)
 
 
-def use_bad_signature(self, testA: 1, testB: "not_a_type", *, testX: float):
+def use_bad_signature(self, testA: 1, *, testX: float):
     pass
 
 
@@ -87,6 +89,7 @@ def __init__(self, **kwargs):
         assert set(kwargs) == {"testX"}
         assert isinstance(kwargs["testX"], float)
 
+
 @given(st.builds(ModelWithBadAliasSignature))
 def test_build_with_non_types_in_signature(val):
     assert isinstance(val, ModelWithBadAliasSignature)