From 02733e6e5849bd60cd938fc05db2f73f8a561036 Mon Sep 17 00:00:00 2001
From: Erdenezul <erdenezul@shine.mn>
Date: Sat, 2 Sep 2017 12:00:57 +0900
Subject: [PATCH] fix flake8 error #1371

---
 mongoengine/document.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mongoengine/document.py b/mongoengine/document.py
index cb901c82..a30dd0df 100644
--- a/mongoengine/document.py
+++ b/mongoengine/document.py
@@ -719,7 +719,7 @@ class Document(BaseDocument):
 
         self._changed_fields = list(
             set(self._changed_fields) - set(fields)
-            ) if fields else obj._changed_fields
+        ) if fields else obj._changed_fields
         self._created = False
         return self