diff --git a/homeassistant/components/thethingsnetwork/sensor.py b/homeassistant/components/thethingsnetwork/sensor.py
index 2e7b7f9499b..0afec8f7510 100644
--- a/homeassistant/components/thethingsnetwork/sensor.py
+++ b/homeassistant/components/thethingsnetwork/sensor.py
@@ -81,8 +81,8 @@ class TtnDataSensor(Entity):
         """Return the state of the entity."""
         if self._ttn_data_storage.data is not None:
             try:
-                return round(self._state[self._value], 1)
-            except (KeyError, TypeError):
+                return self._state[self._value]
+            except KeyError:
                 return None
         return None