diff --git a/homeassistant/components/plaato/__init__.py b/homeassistant/components/plaato/__init__.py
index 914d92040d2..efc3a2b4225 100644
--- a/homeassistant/components/plaato/__init__.py
+++ b/homeassistant/components/plaato/__init__.py
@@ -29,11 +29,9 @@ from homeassistant.const import (
     CONF_SCAN_INTERVAL,
     CONF_TOKEN,
     CONF_WEBHOOK_ID,
-    TEMP_CELSIUS,
-    TEMP_FAHRENHEIT,
-    VOLUME_GALLONS,
-    VOLUME_LITERS,
     Platform,
+    UnitOfTemperature,
+    UnitOfVolume,
 )
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import aiohttp_client
@@ -68,8 +66,12 @@ WEBHOOK_SCHEMA = vol.Schema(
     {
         vol.Required(ATTR_DEVICE_NAME): cv.string,
         vol.Required(ATTR_DEVICE_ID): cv.positive_int,
-        vol.Required(ATTR_TEMP_UNIT): vol.Any(TEMP_CELSIUS, TEMP_FAHRENHEIT),
-        vol.Required(ATTR_VOLUME_UNIT): vol.Any(VOLUME_LITERS, VOLUME_GALLONS),
+        vol.Required(ATTR_TEMP_UNIT): vol.In(
+            UnitOfTemperature.CELSIUS, UnitOfTemperature.FAHRENHEIT
+        ),
+        vol.Required(ATTR_VOLUME_UNIT): vol.In(
+            UnitOfVolume.LITERS, UnitOfVolume.GALLONS
+        ),
         vol.Required(ATTR_BPM): cv.positive_int,
         vol.Required(ATTR_TEMP): vol.Coerce(float),
         vol.Required(ATTR_SG): vol.Coerce(float),