diff --git a/homeassistant/components/sensor/command_sensor.py b/homeassistant/components/sensor/command_sensor.py
index 3a3199be62756f65b71745eea7a8aa2462ef7985..d20b7c8a42aef7ad4456468c5f493ba4beb40538 100644
--- a/homeassistant/components/sensor/command_sensor.py
+++ b/homeassistant/components/sensor/command_sensor.py
@@ -70,7 +70,7 @@ def setup_platform(hass, config, add_devices_callback, discovery_info=None):
         data,
         config.get('name', DEFAULT_NAME),
         config.get('unit_of_measurement'),
-        config.get('correction_factor', None),
+        config.get('correction_factor', 1.0),
         config.get('decimal_places', 0)
     )])