From 6ae709a43f498bc5bcace543a1a31ed9c9c3f227 Mon Sep 17 00:00:00 2001
From: Ryan P Kilby <kilbyr@gmail.com>
Date: Thu, 13 Sep 2018 09:04:31 -0700
Subject: [PATCH] Remove conflicting false/null values

---
 rest_framework/fields.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index 44956aa04..3378de368 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -674,7 +674,7 @@ class BooleanField(Field):
         '0', 0, 0.0,
         False
     }
-    NULL_VALUES = {'n', 'N', 'null', 'Null', 'NULL', '', None}
+    NULL_VALUES = {'null', 'Null', 'NULL', '', None}
 
     def to_internal_value(self, data):
         try:
@@ -719,7 +719,7 @@ class NullBooleanField(Field):
         '0', 0, 0.0,
         False
     }
-    NULL_VALUES = {'n', 'N', 'null', 'Null', 'NULL', '', None}
+    NULL_VALUES = {'null', 'Null', 'NULL', '', None}
 
     def __init__(self, **kwargs):
         assert 'allow_null' not in kwargs, '`allow_null` is not a valid option.'