diff --git a/homeassistant/components/bh1750/sensor.py b/homeassistant/components/bh1750/sensor.py
index 0a305c21adb..cc91fa48bae 100644
--- a/homeassistant/components/bh1750/sensor.py
+++ b/homeassistant/components/bh1750/sensor.py
@@ -2,6 +2,9 @@
 from functools import partial
 import logging
 
+import smbus  # pylint: disable=import-error
+from i2csense.bh1750 import BH1750  # pylint: disable=import-error
+
 import voluptuous as vol
 
 from homeassistant.components.sensor import PLATFORM_SCHEMA
@@ -60,8 +63,6 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
 
 async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
     """Set up the BH1750 sensor."""
-    import smbus  # pylint: disable=import-error
-    from i2csense.bh1750 import BH1750  # pylint: disable=import-error
 
     name = config.get(CONF_NAME)
     bus_number = config.get(CONF_I2C_BUS)