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diff --git a/parts/django/tests/modeltests/many_to_one_null/models.py b/parts/django/tests/modeltests/many_to_one_null/models.py
new file mode 100644
index 0000000..5f824b4
--- /dev/null
+++ b/parts/django/tests/modeltests/many_to_one_null/models.py
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+"""
+16. Many-to-one relationships that can be null
+
+To define a many-to-one relationship that can have a null foreign key, use
+``ForeignKey()`` with ``null=True`` .
+"""
+
+from django.db import models
+
+class Reporter(models.Model):
+    name = models.CharField(max_length=30)
+
+    def __unicode__(self):
+        return self.name
+
+class Article(models.Model):
+    headline = models.CharField(max_length=100)
+    reporter = models.ForeignKey(Reporter, null=True)
+
+    class Meta:
+        ordering = ('headline',)
+
+    def __unicode__(self):
+        return self.headline