From 66b36919a318a19c294a1d2109b3d0ac5c9c0100 Mon Sep 17 00:00:00 2001
From: Warren O'Neill <warren-oneill@users.noreply.github.com>
Date: Thu, 1 Oct 2015 10:57:54 +0200
Subject: [PATCH] BUG: missing comma in _asset_timestamp_fields

---
 zipline/assets/assets.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zipline/assets/assets.py b/zipline/assets/assets.py
index f8efb1db..aa984aa5 100644
--- a/zipline/assets/assets.py
+++ b/zipline/assets/assets.py
@@ -56,7 +56,7 @@ _asset_str_fields = frozenset({
 _asset_timestamp_fields = frozenset({
     'start_date',
     'end_date',
-    'first_traded'
+    'first_traded',
     'notice_date',
     'expiration_date',
     'auto_close_date',