diff --git a/homeassistant/components/fan/xiaomi_miio.py b/homeassistant/components/fan/xiaomi_miio.py
index a69e069ffea..3b0e0385f13 100644
--- a/homeassistant/components/fan/xiaomi_miio.py
+++ b/homeassistant/components/fan/xiaomi_miio.py
@@ -69,7 +69,7 @@ SERVICE_SCHEMA_LED_BRIGHTNESS = AIRPURIFIER_SERVICE_SCHEMA.extend({
 
 SERVICE_SCHEMA_FAVORITE_LEVEL = AIRPURIFIER_SERVICE_SCHEMA.extend({
     vol.Required(ATTR_LEVEL):
-        vol.All(vol.Coerce(int), vol.Clamp(min=0, max=17))
+        vol.All(vol.Coerce(int), vol.Clamp(min=0, max=16))
 })
 
 SERVICE_TO_METHOD = {
diff --git a/homeassistant/components/fan/xiaomi_miio_services.yaml b/homeassistant/components/fan/xiaomi_miio_services.yaml
index 10a6009d9f1..93f6318e60b 100644
--- a/homeassistant/components/fan/xiaomi_miio_services.yaml
+++ b/homeassistant/components/fan/xiaomi_miio_services.yaml
@@ -40,7 +40,7 @@ xiaomi_miio_set_favorite_level:
       example: 'fan.xiaomi_air_purifier'
 
     level:
-      description: Level, between 0 and 17.
+      description: Level, between 0 and 16.
       example: '1'
 
 xiaomi_miio_set_led_brightness: