diff --git a/homeassistant/components/rpi_rf/switch.py b/homeassistant/components/rpi_rf/switch.py
index 18e4a28d5c8..5c09111c1cb 100644
--- a/homeassistant/components/rpi_rf/switch.py
+++ b/homeassistant/components/rpi_rf/switch.py
@@ -1,10 +1,11 @@
 """Support for a switch using a 433MHz module via GPIO on a Raspberry Pi."""
 import importlib
 import logging
+from threading import RLock
 
 import voluptuous as vol
 
-from homeassistant.components.switch import SwitchDevice, PLATFORM_SCHEMA
+from homeassistant.components.switch import PLATFORM_SCHEMA, SwitchDevice
 from homeassistant.const import CONF_NAME, CONF_SWITCHES, EVENT_HOMEASSISTANT_STOP
 import homeassistant.helpers.config_validation as cv
 
@@ -44,7 +45,6 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
 def setup_platform(hass, config, add_entities, discovery_info=None):
     """Find and return switches controlled by a generic RF device via GPIO."""
     rpi_rf = importlib.import_module("rpi_rf")
-    from threading import RLock
 
     gpio = config.get(CONF_GPIO)
     rfdevice = rpi_rf.RFDevice(gpio)