diff --git a/django/db/models/fields/__init__.py b/django/db/models/fields/__init__.py
index 6fba7f7876f..516f4b15389 100644
--- a/django/db/models/fields/__init__.py
+++ b/django/db/models/fields/__init__.py
@@ -247,9 +247,9 @@ class Field(object):
         params['is_required'] = not self.blank and not self.primary_key and not rel
 
         # BooleanFields (CheckboxFields) are a special case. They don't take
-        # is_required or validator_list.
+        # is_required.
         if isinstance(self, BooleanField):
-            del params['validator_list'], params['is_required']
+            del params['is_required']
 
         # If this field is in a related context, check whether any other fields
         # in the related object have core=True. If so, add a validator --
diff --git a/django/forms/__init__.py b/django/forms/__init__.py
index 4907bd76f77..730f7a54daa 100644
--- a/django/forms/__init__.py
+++ b/django/forms/__init__.py
@@ -434,10 +434,12 @@ class HiddenField(FormField):
             (self.get_id(), self.field_name, escape(data))
 
 class CheckboxField(FormField):
-    def __init__(self, field_name, checked_by_default=False):
+    def __init__(self, field_name, checked_by_default=False, validator_list=None):
+        if validator_list is None: validator_list = []
         self.field_name = field_name
         self.checked_by_default = checked_by_default
-        self.is_required, self.validator_list = False, [] # because the validator looks for these
+        self.is_required = False # because the validator looks for these
+        self.validator_list = validator_list[:]
 
     def render(self, data):
         checked_html = ''