diff --git a/google/api_core/_rest_streaming_base.py b/google/api_core/_rest_streaming_base.py
index 406184d4..1a870985 100644
--- a/google/api_core/_rest_streaming_base.py
+++ b/google/api_core/_rest_streaming_base.py
@@ -97,7 +97,9 @@ def _process_chunk(self, chunk: str):
     def _grab(self):
         # Add extra quotes to make json.loads happy.
         if issubclass(self._response_message_cls, proto.Message):
-            return self._response_message_cls.from_json(self._ready_objs.popleft(), ignore_unknown_fields=True)
+            return self._response_message_cls.from_json(
+                self._ready_objs.popleft(), ignore_unknown_fields=True
+            )
         elif issubclass(self._response_message_cls, google.protobuf.message.Message):
             return Parse(self._ready_objs.popleft(), self._response_message_cls())
         else:
diff --git a/tests/unit/test_rest_streaming.py b/tests/unit/test_rest_streaming.py
index 006adef7..9ab90d7b 100644
--- a/tests/unit/test_rest_streaming.py
+++ b/tests/unit/test_rest_streaming.py
@@ -78,7 +78,6 @@ def iter_content(self, *args, **kwargs):
         )
 
 
-
 @pytest.mark.parametrize(
     "random_split,resp_message_is_proto_plus",
     [(False, True), (False, False)],