diff --git a/django_celery_beat/models.py b/django_celery_beat/models.py
index 583d8b63..b8bef6d1 100644
--- a/django_celery_beat/models.py
+++ b/django_celery_beat/models.py
@@ -220,7 +220,7 @@ class Meta:
         ordering = ['clocked_time']
 
     def __str__(self):
-        return '{}'.format(self.clocked_time)
+        return '{}'.format(make_aware(self.clocked_time))
 
     @property
     def schedule(self):