diff --git a/encord/objects/classification_instance.py b/encord/objects/classification_instance.py
index 67556c67..061fdfe0 100644
--- a/encord/objects/classification_instance.py
+++ b/encord/objects/classification_instance.py
@@ -57,19 +57,13 @@
 
 # For Audio and Text files, classifications can only be applied to Range(start=0, end=0)
 # Because we treat the entire file as being on one frame (for classifications, its different for objects)
-def _verify_non_geometric_classifications_range(
-        ranges_to_add: Ranges,
-        label_row: Optional[LabelRowV2]
-) -> None:
-    is_range_only_on_frame_0 = (len(ranges_to_add) == 1
-                                and ranges_to_add[0].start == 0
-                                and ranges_to_add[0].end == 0)
-    if (label_row is not None
-        and not is_geometric(label_row.data_type)
-        and not is_range_only_on_frame_0):
+def _verify_non_geometric_classifications_range(ranges_to_add: Ranges, label_row: Optional[LabelRowV2]) -> None:
+    is_range_only_on_frame_0 = len(ranges_to_add) == 1 and ranges_to_add[0].start == 0 and ranges_to_add[0].end == 0
+    if label_row is not None and not is_geometric(label_row.data_type) and not is_range_only_on_frame_0:
         raise LabelRowError(
             "For audio files and text files, classifications can only be attached to frame=0 "
-            "You may use `ClassificationInstance.set_for_frames(frames=Range(start=0, end=0))`.")
+            "You may use `ClassificationInstance.set_for_frames(frames=Range(start=0, end=0))`."
+        )
 
 
 class ClassificationInstance:
@@ -152,7 +146,6 @@ def _set_for_ranges(
         frames: Frames,
         overwrite: bool,
         created_at: Optional[datetime],
-
         created_by: Optional[str],
         confidence: float,
         manual_annotation: bool,
@@ -173,7 +166,6 @@ def _set_for_ranges(
                 f"Set 'overwrite' parameter to True to override."
             )
 
-
         for range_to_add in ranges_to_add:
             self._check_within_range(range_to_add.end)
 
diff --git a/tests/objects/test_label_structure.py b/tests/objects/test_label_structure.py
index 9e232422..8ded1de7 100644
--- a/tests/objects/test_label_structure.py
+++ b/tests/objects/test_label_structure.py
@@ -687,11 +687,13 @@ def test_add_and_get_classification_instances_to_audio_label_row(ontology):
 
     with pytest.raises(LabelRowError) as e:
         label_row.add_classification_instance(overlapping_classification_instance)
-    
-    assert e.value.message == (f"A ClassificationInstance '{overlapping_classification_instance.classification_hash}' was already added "
-                               "and has overlapping frames. Overlapping frames that were "
-                               "found are `[(0:0)]`. Make sure that you only add classifications "
-                               "which are on frames where the same type of classification does not yet exist.")
+
+    assert e.value.message == (
+        f"A ClassificationInstance '{overlapping_classification_instance.classification_hash}' was already added "
+        "and has overlapping frames. Overlapping frames that were "
+        "found are `[(0:0)]`. Make sure that you only add classifications "
+        "which are on frames where the same type of classification does not yet exist."
+    )
 
     # Do not raise if overwrite flag is passed
     overlapping_classification_instance.set_for_frames(0, overwrite=True)
@@ -1127,10 +1129,10 @@ def test_non_range_classification_cannot_be_added_to_audio_label_row(ontology):
 
 
 def test_non_geometric_label_rows_can_only_have_classifications_on_frame_0(
-        ontology,
-        empty_audio_label_row: LabelRowV2,
-        empty_plain_text_label_row: LabelRowV2,
-        empty_html_text_label_row: LabelRowV2,
+    ontology,
+    empty_audio_label_row: LabelRowV2,
+    empty_plain_text_label_row: LabelRowV2,
+    empty_html_text_label_row: LabelRowV2,
 ):
     for label_row in [empty_audio_label_row, empty_html_text_label_row, empty_plain_text_label_row]:
         classification_instance = ClassificationInstance(checklist_classification, range_only=True)
@@ -1140,13 +1142,13 @@ def test_non_geometric_label_rows_can_only_have_classifications_on_frame_0(
         with pytest.raises(LabelRowError) as e:
             classification_instance.set_for_frames(Range(start=0, end=1))
 
-        assert e.value.message == ("For audio files and text files, classifications can only be "
-                                   "attached to frame=0 You may use "
-                                   "`ClassificationInstance.set_for_frames(frames=Range(start=0, end=0))`."
+        assert e.value.message == (
+            "For audio files and text files, classifications can only be "
+            "attached to frame=0 You may use "
+            "`ClassificationInstance.set_for_frames(frames=Range(start=0, end=0))`."
         )
 
 
-
 def test_audio_object_exceed_max_frames(ontology, empty_audio_label_row: LabelRowV2):
     object_instance = ObjectInstance(audio_obj_ontology_item)
     object_instance.set_for_frames(AudioCoordinates(range=[Range(start=0, end=100)]))