diff --git a/docs/releases/1.7.txt b/docs/releases/1.7.txt
index 0768a5cf3a..f2a275ed09 100644
--- a/docs/releases/1.7.txt
+++ b/docs/releases/1.7.txt
@@ -185,7 +185,7 @@ class method can now directly :ref:`create Manager with QuerySet methods
 
     class Food(models.Model):
         kind = models.CharField(max_length=50)
-        vegetarian = models.BooleanField()
+        vegetarian = models.BooleanField(default=False)
         objects = FoodQuerySet.as_manager()
 
     Food.objects.pizzas().vegetarian()
diff --git a/docs/topics/db/examples/one_to_one.txt b/docs/topics/db/examples/one_to_one.txt
index beb4aa01d9..9e6461d8e6 100644
--- a/docs/topics/db/examples/one_to_one.txt
+++ b/docs/topics/db/examples/one_to_one.txt
@@ -21,8 +21,8 @@ In this example, a ``Place`` optionally can be a ``Restaurant``:
 
     class Restaurant(models.Model):
         place = models.OneToOneField(Place, primary_key=True)
-        serves_hot_dogs = models.BooleanField()
-        serves_pizza = models.BooleanField()
+        serves_hot_dogs = models.BooleanField(default=False)
+        serves_pizza = models.BooleanField(default=False)
 
         def __str__(self):              # __unicode__ on Python 2
             return "%s the restaurant" % self.place.name
diff --git a/docs/topics/db/models.txt b/docs/topics/db/models.txt
index 85fbce4bba..682db34939 100644
--- a/docs/topics/db/models.txt
+++ b/docs/topics/db/models.txt
@@ -1006,8 +1006,8 @@ For example::
         address = models.CharField(max_length=80)
 
     class Restaurant(Place):
-        serves_hot_dogs = models.BooleanField()
-        serves_pizza = models.BooleanField()
+        serves_hot_dogs = models.BooleanField(default=False)
+        serves_pizza = models.BooleanField(default=False)
 
 All of the fields of ``Place`` will also be available in ``Restaurant``,
 although the data will reside in a different database table. So these are both
diff --git a/docs/topics/serialization.txt b/docs/topics/serialization.txt
index 6a89ae4141..225a6b0736 100644
--- a/docs/topics/serialization.txt
+++ b/docs/topics/serialization.txt
@@ -84,7 +84,7 @@ model will be serialized. For example, consider the following models::
         name = models.CharField(max_length=50)
 
     class Restaurant(Place):
-        serves_hot_dogs = models.BooleanField()
+        serves_hot_dogs = models.BooleanField(default=False)
 
 If you only serialize the Restaurant model::