diff --git a/auditlog/models.py b/auditlog/models.py
index 6811544..eccf6c7 100644
--- a/auditlog/models.py
+++ b/auditlog/models.py
@@ -240,7 +240,7 @@ class LogEntryManager(models.Manager):
                 "fields", self._get_applicable_model_fields(instance, model_fields)
             )
 
-    #  safeguard: if fields explicitly set → only use them
+        #  safeguard: if fields explicitly set → only use them
         if "fields" in kwargs:
             allowed_fields = set(kwargs["fields"])
         else:
@@ -248,9 +248,11 @@ class LogEntryManager(models.Manager):
 
         instance_copy = self._get_copy_with_python_typed_fields(instance)
 
-    #  drop any deferred field not in allowed_fields
+        #  drop any deferred field not in allowed_fields
         for f in instance_copy._meta.fields:
-            if f.name not in allowed_fields and f.name in getattr(instance_copy, "deferred_fields", []):
+            if f.name not in allowed_fields and f.name in getattr(
+                instance_copy, "deferred_fields", []
+            ):
                 setattr(instance_copy, f.name, None)
 
         data = dict(
@@ -263,7 +265,6 @@ class LogEntryManager(models.Manager):
 
         return data
 
-
     def _get_copy_with_python_typed_fields(self, instance):
         """
         Attempt to create copy of instance and coerce types on instance fields
diff --git a/auditlog_tests/tests.py b/auditlog_tests/tests.py
index 1ce3dfd..d7f5546 100644
--- a/auditlog_tests/tests.py
+++ b/auditlog_tests/tests.py
@@ -21,11 +21,11 @@ from django.db.models import JSONField, Value
 from django.db.models.functions import Now
 from django.db.models.signals import pre_save
 from django.test import RequestFactory, TestCase, TransactionTestCase, override_settings
+from django.test.utils import isolate_apps
 from django.urls import resolve, reverse
 from django.utils import dateformat, formats
 from django.utils import timezone as django_timezone
 from django.utils.encoding import smart_str
-from django.test.utils import isolate_apps
 from django.utils.translation import gettext_lazy as _
 from test_app.fixtures.custom_get_cid import get_cid as custom_get_cid
 from test_app.models import (
@@ -132,8 +132,9 @@ class SimpleModelTest(TestCase):
         class Book(models.Model):
             title = models.CharField(max_length=100)
             description = models.TextField()
+
             class Meta:
-               app_label = "auditlog_tests" 
+                app_label = "auditlog_tests"
 
         auditlog.register(Book, serialize_data=True)
 
@@ -142,8 +143,6 @@ class SimpleModelTest(TestCase):
         b.delete()
 
         assert LogEntry.objects.filter(object_pk=b.pk).exists()
-    
-    
 
     def test_update_specific_field_supplied_via_save_method(self):
         obj = self.obj