diff --git a/homeassistant/components/sensor/filter.py b/homeassistant/components/sensor/filter.py
index 21fd09248ff..93380291a3e 100644
--- a/homeassistant/components/sensor/filter.py
+++ b/homeassistant/components/sensor/filter.py
@@ -364,7 +364,6 @@ class RangeFilter(Filter):
 
     def _filter_state(self, new_state):
         """Implement the range filter."""
-
         if new_state.state > self._upper_bound:
 
             self._stats_internal['erasures_up'] += 1
diff --git a/tests/components/sensor/test_filter.py b/tests/components/sensor/test_filter.py
index e449f239c0b..6fc732b28f5 100644
--- a/tests/components/sensor/test_filter.py
+++ b/tests/components/sensor/test_filter.py
@@ -141,7 +141,7 @@ class TestFilterSensor(unittest.TestCase):
                            lower_bound=lower,
                            upper_bound=upper)
         for unf_state in self.values:
-            prev = unf_state.state
+            prev = float(unf_state.state)
             filtered = filt.filter_state(unf_state)
             if prev < lower:
                 self.assertEqual(lower, filtered.state)