diff --git a/homeassistant/components/tado/services.yaml b/homeassistant/components/tado/services.yaml
index 3c5a830698d..211ae4cd1ff 100644
--- a/homeassistant/components/tado/services.yaml
+++ b/homeassistant/components/tado/services.yaml
@@ -41,7 +41,7 @@ set_water_heater_timer:
   target:
     entity:
       integration: tado
-      domain: climate
+      domain: water_heater
   fields:
     time_period:
       name: Time period