diff --git a/zipline/finance/blotter.py b/zipline/finance/blotter.py
index 76707d12..07f3a030 100644
--- a/zipline/finance/blotter.py
+++ b/zipline/finance/blotter.py
@@ -18,7 +18,6 @@ import uuid
 from copy import copy
 from logbook import Logger
 from collections import defaultdict
-import numpy as np
 
 import zipline.errors
 import zipline.protocol as zp