diff --git a/IPython/frontend/html/notebook/notebookapp.py b/IPython/frontend/html/notebook/notebookapp.py
index 2387fc8ca..9c34df48a 100644
--- a/IPython/frontend/html/notebook/notebookapp.py
+++ b/IPython/frontend/html/notebook/notebookapp.py
@@ -35,13 +35,7 @@ import zmq
 # Install the pyzmq ioloop. This has to be done before anything else from
 # tornado is imported.
 from zmq.eventloop import ioloop
-# FIXME: ioloop.install is new in pyzmq-2.1.7, so remove this conditional
-# when pyzmq dependency is updated beyond that.
-if hasattr(ioloop, 'install'):
-    ioloop.install()
-else:
-    import tornado.ioloop
-    tornado.ioloop.IOLoop = ioloop.IOLoop
+ioloop.install()
 
 from tornado import httpserver
 from tornado import web