diff --git a/homeassistant/components/sensor/miflora.py b/homeassistant/components/sensor/miflora.py
index ac8646bb3c1..063c4e8068e 100644
--- a/homeassistant/components/sensor/miflora.py
+++ b/homeassistant/components/sensor/miflora.py
@@ -45,7 +45,7 @@ SENSOR_TYPES = {
 
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
     vol.Required(CONF_MAC): cv.string,
-    vol.Required(CONF_MONITORED_CONDITIONS):
+    vol.Optional(CONF_MONITORED_CONDITIONS, default=SENSOR_TYPES):
         vol.All(cv.ensure_list, [vol.In(SENSOR_TYPES)]),
     vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
     vol.Optional(CONF_MEDIAN, default=DEFAULT_MEDIAN): cv.positive_int,