From 0404f09a7e69f533038d47ca25caad90c0c2659f Mon Sep 17 00:00:00 2001
From: Tom Christie
Date: Tue, 23 Sep 2014 14:30:17 +0100
Subject: NullBooleanField

---
 rest_framework/utils/field_mapping.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'rest_framework/utils/field_mapping.py')

diff --git a/rest_framework/utils/field_mapping.py b/rest_framework/utils/field_mapping.py
index 1c718ccb..c208afdc 100644
--- a/rest_framework/utils/field_mapping.py
+++ b/rest_framework/utils/field_mapping.py
@@ -74,7 +74,7 @@ def get_field_kwargs(field_name, model_field):
         kwargs['choices'] = model_field.flatchoices
         return kwargs
 
-    if model_field.null:
+    if model_field.null and not isinstance(model_field, models.NullBooleanField):
         kwargs['allow_null'] = True
 
     if model_field.blank:
-- 
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