diff --git a/homeassistant/components/statistics/sensor.py b/homeassistant/components/statistics/sensor.py
index 51868c6d0a8..6e042b1536f 100644
--- a/homeassistant/components/statistics/sensor.py
+++ b/homeassistant/components/statistics/sensor.py
@@ -1,25 +1,26 @@
 """Support for statistics for sensor values."""
+from collections import deque
 import logging
 import statistics
-from collections import deque
 
 import voluptuous as vol
 
-import homeassistant.helpers.config_validation as cv
+from homeassistant.components.recorder.models import States
+from homeassistant.components.recorder.util import execute, session_scope
 from homeassistant.components.sensor import PLATFORM_SCHEMA
 from homeassistant.const import (
-    CONF_NAME,
-    CONF_ENTITY_ID,
-    EVENT_HOMEASSISTANT_START,
-    STATE_UNKNOWN,
-    STATE_UNAVAILABLE,
     ATTR_UNIT_OF_MEASUREMENT,
+    CONF_ENTITY_ID,
+    CONF_NAME,
+    EVENT_HOMEASSISTANT_START,
+    STATE_UNAVAILABLE,
+    STATE_UNKNOWN,
 )
 from homeassistant.core import callback
+import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import Entity
 from homeassistant.helpers.event import async_track_state_change
 from homeassistant.util import dt as dt_util
-from homeassistant.components.recorder.util import session_scope, execute
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -275,7 +276,6 @@ class StatisticsSensor(Entity):
         If MaxAge is provided then query will restrict to entries younger then
         current datetime - MaxAge.
         """
-        from homeassistant.components.recorder.models import States
 
         _LOGGER.debug("%s: initializing values from the database", self.entity_id)