diff --git a/zipline/__init__.py b/zipline/__init__.py
index 5f5ae720..381b5efd 100644
--- a/zipline/__init__.py
+++ b/zipline/__init__.py
@@ -34,7 +34,7 @@ from . import api
 try:
     ip = get_ipython()  # flake8: noqa
     ip.register_magic_function(utils.parse_cell_magic, "line_cell", "zipline")
-except:
+except NameError:
     pass
 
 __all__ = [