diff --git a/zipline/testing/__init__.py b/zipline/testing/__init__.py
index 66b5e5b9..bc9cff46 100644
--- a/zipline/testing/__init__.py
+++ b/zipline/testing/__init__.py
@@ -1,6 +1,5 @@
 from .core import (  # noqa
     EPOCH,
-    ExceptionSource,
     ExplodingObject,
     FakeDataPortal,
     FetcherDataPortal,
diff --git a/zipline/testing/core.py b/zipline/testing/core.py
index 41c86e9a..d680d55a 100644
--- a/zipline/testing/core.py
+++ b/zipline/testing/core.py
@@ -170,24 +170,6 @@ def assert_single_position(test, zipline):
     return output, transaction_count
 
 
-class ExceptionSource(object):
-
-    def __init__(self):
-        pass
-
-    def get_hash(self):
-        return "ExceptionSource"
-
-    def __iter__(self):
-        return self
-
-    def next(self):
-        5 / 0
-
-    def __next__(self):
-        5 / 0
-
-
 @contextmanager
 def security_list_copy():
     old_dir = security_list.SECURITY_LISTS_DIR