diff --git a/zipline/algorithm.py b/zipline/algorithm.py
index f67b9d86..7bf1bb32 100644
--- a/zipline/algorithm.py
+++ b/zipline/algorithm.py
@@ -142,7 +142,6 @@ class TradingAlgorithm(object):
         self.logger = None
 
         self.benchmark_return_source = None
-        self.perf_tracker = None
 
         # default components for transact
         self.slippage = VolumeShareSlippage()