diff --git a/esphome/components/airthings_wave_base/__init__.py b/esphome/components/airthings_wave_base/__init__.py
index 6a29683ced..c3f3b8f199 100644
--- a/esphome/components/airthings_wave_base/__init__.py
+++ b/esphome/components/airthings_wave_base/__init__.py
@@ -34,7 +34,7 @@ AirthingsWaveBase = airthings_wave_base_ns.class_(
 
 
 BASE_SCHEMA = (
-    sensor.SENSOR_SCHEMA.extend(
+    cv.Schema(
         {
             cv.Optional(CONF_HUMIDITY): sensor.sensor_schema(
                 unit_of_measurement=UNIT_PERCENT,