diff --git a/lib/tfw/networking/controller_connector.py b/lib/tfw/networking/controller_connector.py
index dcafa70..5646b8d 100644
--- a/lib/tfw/networking/controller_connector.py
+++ b/lib/tfw/networking/controller_connector.py
@@ -1,12 +1,9 @@
 import zmq
-from zmq.eventloop import ioloop
 from zmq.eventloop.zmqstream import ZMQStream
 
 from tfw.config import tfwenv
 from tfw.networking.zmq_connector_base import ZMQConnectorBase
 
-ioloop.install()
-
 
 class ControllerConnector(ZMQConnectorBase):
     def __init__(self, zmq_context=None):
diff --git a/lib/tfw/networking/solvable_connector.py b/lib/tfw/networking/solvable_connector.py
index a207a21..0225b39 100644
--- a/lib/tfw/networking/solvable_connector.py
+++ b/lib/tfw/networking/solvable_connector.py
@@ -1,12 +1,9 @@
 import zmq
-from zmq.eventloop import ioloop
 
 from tfw.config import tfwenv
 from tfw.networking.zmq_connector_base import ZMQConnectorBase
 from tfw.networking.serialization import serialize_all, deserialize_all
 
-ioloop.install()
-
 
 class SolvableConnector(ZMQConnectorBase):
     def __init__(self, zmq_context=None):