From 91916a4db14cd6a06aca13fb9a46fc667f6c0682 Mon Sep 17 00:00:00 2001
From: Adam Johnson <me@adamj.eu>
Date: Wed, 30 Sep 2020 13:47:06 +0100
Subject: [PATCH] Fix NullBooleanField warning (#7565)

The argument to Field is 'allow_null'.
---
 rest_framework/fields.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index f218713f1..fdfba13f2 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -749,7 +749,7 @@ class NullBooleanField(BooleanField):
         warnings.warn(
             "The `NullBooleanField` is deprecated and will be removed starting "
             "with 3.14. Instead use the `BooleanField` field and set "
-            "`null=True` which does the same thing.",
+            "`allow_null=True` which does the same thing.",
             RemovedInDRF314Warning, stacklevel=2
         )