diff --git a/tests/dates/models.py b/tests/dates/models.py
index 74f9db28ad..7f710ce1ea 100644
--- a/tests/dates/models.py
+++ b/tests/dates/models.py
@@ -5,7 +5,7 @@ from django.utils import timezone
 class Article(models.Model):
     title = models.CharField(max_length=100)
     pub_date = models.DateField()
-    pub_datetime = models.DateTimeField(default=timezone.now())
+    pub_datetime = models.DateTimeField(default=timezone.now)
 
     categories = models.ManyToManyField("Category", related_name="articles")