From cf3fb143fdae2a3171f8c8783c654eb3af2190d9 Mon Sep 17 00:00:00 2001
From: Scott Sanderson <ssanderson@quantopian.com>
Date: Mon, 7 Mar 2016 16:15:45 -0500
Subject: [PATCH] DOC: Fix typo in docstring.

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

diff --git a/zipline/pipeline/filters/filter.py b/zipline/pipeline/filters/filter.py
index 2212f507..86eaa3a9 100644
--- a/zipline/pipeline/filters/filter.py
+++ b/zipline/pipeline/filters/filter.py
@@ -155,7 +155,7 @@ class NumExprFilter(NumericalExpression, Filter):
         """
         Helper for creating new NumExprFactors.
 
-        This is just a wrapper around NumExprFactor.__new__ that always
+        This is just a wrapper around NumericalExpression.__new__ that always
         forwards `bool` as the dtype, since Filters can only be of boolean
         dtype.
         """