From 53598781b843980c1caa6ee8c05327e0c38df2dd Mon Sep 17 00:00:00 2001
From: Ross Lawley <ross.lawley@gmail.com>
Date: Tue, 11 Oct 2011 12:44:41 +0200
Subject: [PATCH] Facepalm - mutable default argument in method..

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

diff --git a/mongoengine/base.py b/mongoengine/base.py
index 0cf57ec5..f70d0949 100644
--- a/mongoengine/base.py
+++ b/mongoengine/base.py
@@ -841,7 +841,7 @@ class BaseDocument(object):
         if hasattr(self, '_changed_fields') and key not in self._changed_fields:
             self._changed_fields.append(key)
 
-    def _get_changed_fields(self, key='', inspected=[]):
+    def _get_changed_fields(self, key='', inspected=None):
         """Returns a list of all fields that have explicitly been changed.
         """
         from mongoengine import EmbeddedDocument, DynamicEmbeddedDocument