diff --git a/docs/topics/forms/modelforms.txt b/docs/topics/forms/modelforms.txt
index 52ea0c512a..aae1fff8b5 100644
--- a/docs/topics/forms/modelforms.txt
+++ b/docs/topics/forms/modelforms.txt
@@ -96,7 +96,7 @@ Model field                         Form field
 :class:`ManyToManyField`            :class:`~django.forms.ModelMultipleChoiceField`
                                     (see below)
 
-:class:`NullBooleanField`           :class:`~django.forms.CharField`
+:class:`NullBooleanField`           :class:`~django.forms.NullBooleanField`
 
 :class:`PositiveIntegerField`       :class:`~django.forms.IntegerField`