diff --git a/django_celery_results/models/__init__.py b/django_celery_results/models/__init__.py
index 4165e265..5e478755 100644
--- a/django_celery_results/models/__init__.py
+++ b/django_celery_results/models/__init__.py
@@ -1,3 +1,3 @@
 from .generic import ChordCounter, GroupResult, TaskResult
 
-__ALL__ = [ChordCounter, GroupResult, TaskResult]
+__all__ = ["ChordCounter", "GroupResult", "TaskResult"]