From cd05d8d53dd2215b8b778e6f3ae193c36ec183c2 Mon Sep 17 00:00:00 2001
From: Joffrey F <joffrey@docker.com>
Date: Fri, 3 Feb 2017 19:53:58 -0800
Subject: [PATCH] Fix _post_json behavior

Signed-off-by: Joffrey F <joffrey@docker.com>
---
 docker/api/client.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docker/api/client.py b/docker/api/client.py
index 3f701de2..10729739 100644
--- a/docker/api/client.py
+++ b/docker/api/client.py
@@ -231,7 +231,7 @@ class APIClient(
             for k, v in six.iteritems(data):
                 if v is not None:
                     data2[k] = v
-        else:
+        elif data is not None:
             data2 = data
 
         if 'headers' not in kwargs: