diff --git a/homeassistant/components/htu21d/sensor.py b/homeassistant/components/htu21d/sensor.py
index f94b11d5ada..954ba60abbf 100644
--- a/homeassistant/components/htu21d/sensor.py
+++ b/homeassistant/components/htu21d/sensor.py
@@ -3,11 +3,13 @@ from datetime import timedelta
 from functools import partial
 import logging
 
+from i2csense.htu21d import HTU21D  # pylint: disable=import-error
+import smbus  # pylint: disable=import-error
 import voluptuous as vol
 
 from homeassistant.components.sensor import PLATFORM_SCHEMA
-import homeassistant.helpers.config_validation as cv
 from homeassistant.const import CONF_NAME, TEMP_FAHRENHEIT
+import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import Entity
 from homeassistant.util import Throttle
 from homeassistant.util.temperature import celsius_to_fahrenheit
@@ -34,9 +36,6 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
 
 async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
     """Set up the HTU21D sensor."""
-    import smbus  # pylint: disable=import-error
-    from i2csense.htu21d import HTU21D  # pylint: disable=import-error
-
     name = config.get(CONF_NAME)
     bus_number = config.get(CONF_I2C_BUS)
     temp_unit = hass.config.units.temperature_unit