diff --git a/homeassistant/components/rpi_rf/switch.py b/homeassistant/components/rpi_rf/switch.py
index 78c2153a7b3..4ac7283b194 100644
--- a/homeassistant/components/rpi_rf/switch.py
+++ b/homeassistant/components/rpi_rf/switch.py
@@ -6,7 +6,12 @@ from threading import RLock
 import voluptuous as vol
 
 from homeassistant.components.switch import PLATFORM_SCHEMA, SwitchEntity
-from homeassistant.const import CONF_NAME, CONF_SWITCHES, EVENT_HOMEASSISTANT_STOP
+from homeassistant.const import (
+    CONF_NAME,
+    CONF_PROTOCOL,
+    CONF_SWITCHES,
+    EVENT_HOMEASSISTANT_STOP,
+)
 import homeassistant.helpers.config_validation as cv
 
 _LOGGER = logging.getLogger(__name__)
@@ -14,7 +19,6 @@ _LOGGER = logging.getLogger(__name__)
 CONF_CODE_OFF = "code_off"
 CONF_CODE_ON = "code_on"
 CONF_GPIO = "gpio"
-CONF_PROTOCOL = "protocol"
 CONF_PULSELENGTH = "pulselength"
 CONF_SIGNAL_REPETITIONS = "signal_repetitions"