diff --git a/homeassistant/components/sensor/command_line.py b/homeassistant/components/sensor/command_line.py
index e3e361c1ae2..b7372edb0dc 100644
--- a/homeassistant/components/sensor/command_line.py
+++ b/homeassistant/components/sensor/command_line.py
@@ -54,7 +54,7 @@ class CommandSensor(Entity):
         self._hass = hass
         self.data = data
         self._name = name
-        self._state = False
+        self._state = STATE_UNKNOWN
         self._unit_of_measurement = unit_of_measurement
         self._value_template = value_template
         self.update()