diff --git a/.github/workflows/mongodb_settings.py b/.github/workflows/mongodb_settings.py
index 280a80492..63f8f6f0c 100644
--- a/.github/workflows/mongodb_settings.py
+++ b/.github/workflows/mongodb_settings.py
@@ -8,7 +8,7 @@
         "NAME": "djangotests-other",
     },
 }
-DEFAULT_AUTO_FIELD = "django_mongodb.fields.MongoAutoField"
+DEFAULT_AUTO_FIELD = "django_mongodb.fields.ObjectIdAutoField"
 PASSWORD_HASHERS = ("django.contrib.auth.hashers.MD5PasswordHasher",)
 SECRET_KEY = "django_tests_secret_key"
 USE_TZ = False
diff --git a/README.md b/README.md
index 40a7d0bef..a66cc17a9 100644
--- a/README.md
+++ b/README.md
@@ -49,10 +49,10 @@ DATABASES = {
 [`MongoClient`](https://pymongo.readthedocs.io/en/stable/api/pymongo/mongo_client.html).
 
 In your Django settings, you must specify that all models should use
-`MongoAutoField`.
+`ObjectIdAutoField`.
 
 ```python
-DEFAULT_AUTO_FIELD = "django_mongodb.fields.MongoAutoField"
+DEFAULT_AUTO_FIELD = "django_mongodb.fields.ObjectIdAutoField"
 ```
 
 This won't override any apps that have an `AppConfig` that specifies
@@ -68,22 +68,22 @@ from django.contrib.contenttypes.apps import ContentTypesConfig
 
 
 class MongoAdminConfig(AdminConfig):
-    default_auto_field = "django_mongodb.fields.MongoAutoField"
+    default_auto_field = "django_mongodb.fields.ObjectIdAutoField"
 
 
 class MongoAuthConfig(AuthConfig):
-    default_auto_field = "django_mongodb.fields.MongoAutoField"
+    default_auto_field = "django_mongodb.fields.ObjectIdAutoField"
 
 
 class MongoContentTypesConfig(ContentTypesConfig):
-    default_auto_field = "django_mongodb.fields.MongoAutoField"
+    default_auto_field = "django_mongodb.fields.ObjectIdAutoField"
 ```
 
 Then replace each app reference in the `INSTALLED_APPS` setting with the new
 ``AppConfig``. For example, replace  `'django.contrib.admin'` with
 `'mysite.apps.MongoAdminConfig'`.
 
-Because all models must use `MongoAutoField`, each third-party and contrib app
+Because all models must use `ObjectIdAutoField`, each third-party and contrib app
 you use needs to have its own migrations specific to MongoDB.
 
 For example, you might configure your settings like this:
diff --git a/django_mongodb/fields/__init__.py b/django_mongodb/fields/__init__.py
index 0c5531b89..d558e0fe8 100644
--- a/django_mongodb/fields/__init__.py
+++ b/django_mongodb/fields/__init__.py
@@ -1,8 +1,8 @@
-from .auto import MongoAutoField
+from .auto import ObjectIdAutoField
 from .duration import register_duration_field
 from .json import register_json_field
 
-__all__ = ["register_fields", "MongoAutoField"]
+__all__ = ["register_fields", "ObjectIdAutoField"]
 
 
 def register_fields():
diff --git a/django_mongodb/fields/auto.py b/django_mongodb/fields/auto.py
index f27d60517..c79a21e8b 100644
--- a/django_mongodb/fields/auto.py
+++ b/django_mongodb/fields/auto.py
@@ -5,7 +5,7 @@
 from django.utils.translation import gettext_lazy as _
 
 
-class MongoAutoField(AutoField):
+class ObjectIdAutoField(AutoField):
     default_error_messages = {
         "invalid": _("“%(value)s” value must be an Object Id."),
     }