diff --git a/spacy/kb/candidate.py b/spacy/kb/candidate.py
index 663b68168..b32b72dd8 100644
--- a/spacy/kb/candidate.py
+++ b/spacy/kb/candidate.py
@@ -76,7 +76,7 @@ class InMemoryCandidate(Candidate):
         mention: str,
         entity_vector: List[float],
         prior_prob: float,
-        entity_freq: int
+        entity_freq: int,
     ):
         """
         hash_to_str (Callable[[int], str]): Callable retrieving entity name from provided entity/vocab hash.
diff --git a/spacy/tests/serialize/test_serialize_kb.py b/spacy/tests/serialize/test_serialize_kb.py
index 860b9f8c7..3d75862c6 100644
--- a/spacy/tests/serialize/test_serialize_kb.py
+++ b/spacy/tests/serialize/test_serialize_kb.py
@@ -63,7 +63,9 @@ def _check_kb(kb):
         assert alias_string not in kb.get_alias_strings()
 
     # check candidates & probabilities
-    candidates = sorted(kb._get_alias_candidates("double07"), key=lambda x: x.entity_id_str)
+    candidates = sorted(
+        kb._get_alias_candidates("double07"), key=lambda x: x.entity_id_str
+    )
     assert len(candidates) == 2
 
     assert candidates[0].entity_id_str == "Q007"