diff --git a/tests/test_implementations/test_pronto.py b/tests/test_implementations/test_pronto.py
index d9625b807..694762cd2 100644
--- a/tests/test_implementations/test_pronto.py
+++ b/tests/test_implementations/test_pronto.py
@@ -90,18 +90,19 @@ def test_conflicting_oio_prefixes(self):
         """
         See https://github.com/INCATools/ontology-access-kit/issues/702
         """
-        resource = OntologyResource(slug="metadata-map-prefixes-test.obo", directory=INPUT_DIR, local=True)
+        resource = OntologyResource(
+            slug="metadata-map-prefixes-test.obo", directory=INPUT_DIR, local=True
+        )
         adapter = ProntoImplementation(resource)
         m = adapter.entity_metadata_map("HP:0000001")
         self.assertIsNotNone(m)
         uri = "http://www.geneontology.org/formats/oboInOwl#foo"
         curie = adapter.uri_to_curie(uri)
         # behavior is currently intentionally undefined
-        assert (curie == "oio:foo" or curie == "oboInOwl:foo")
+        assert curie == "oio:foo" or curie == "oboInOwl:foo"
         # must be reversible
         assert adapter.curie_to_uri(curie) == uri
 
-
     def test_relationship_map(self):
         oi = self.oi
         rels = oi.outgoing_relationship_map("GO:0005773")
diff --git a/tests/test_implementations/test_simple_obo.py b/tests/test_implementations/test_simple_obo.py
index eae4d697b..5b6bb584a 100644
--- a/tests/test_implementations/test_simple_obo.py
+++ b/tests/test_implementations/test_simple_obo.py
@@ -108,14 +108,16 @@ def test_conflicting_oio_prefixes(self):
         See https://github.com/INCATools/ontology-access-kit/issues/702
         """
         # TODO: DRY. This is currently duplicative of a pronto test
-        resource = OntologyResource(slug="metadata-map-prefixes-test.obo", directory=INPUT_DIR, local=True)
+        resource = OntologyResource(
+            slug="metadata-map-prefixes-test.obo", directory=INPUT_DIR, local=True
+        )
         adapter = SimpleOboImplementation(resource)
         m = adapter.entity_metadata_map("HP:0000001")
         self.assertIsNotNone(m)
         uri = "http://www.geneontology.org/formats/oboInOwl#foo"
         curie = adapter.uri_to_curie(uri)
         # behavior is currently intentionally undefined
-        assert (curie == "oio:foo" or curie == "oboInOwl:foo")
+        assert curie == "oio:foo" or curie == "oboInOwl:foo"
         # must be reversible
         assert adapter.curie_to_uri(curie) == uri