From 860a340e551fec8ee772e8e7414e43464e61022c Mon Sep 17 00:00:00 2001
From: Thomas Wiecki <thomas.wiecki@gmail.com>
Date: Mon, 25 Nov 2013 19:52:05 -0500
Subject: [PATCH] BUG: Erroneous call to log.

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

diff --git a/zipline/algorithm.py b/zipline/algorithm.py
index 970de59a..0e1787ce 100644
--- a/zipline/algorithm.py
+++ b/zipline/algorithm.py
@@ -399,7 +399,7 @@ class TradingAlgorithm(object):
             zero_message = "Price of 0 for {psid}; can't infer value".format(
                 psid=sid
             )
-            log.debug(zero_message)
+            self.logger.debug(zero_message)
             # Don't place any order
             return
         else: