diff --git a/esphome/esp-datacupboardfans.yaml b/esphome/esp-datacupboardfans.yaml
index 6ba4757..153086e 100644
--- a/esphome/esp-datacupboardfans.yaml
+++ b/esphome/esp-datacupboardfans.yaml
@@ -624,20 +624,20 @@ mqtt:
   on_message:
     # Relay control
     - topic: "${mqtt_main_topic}/relay/set"
-      payload: "ON"
+      payload: "On"
       then:
         - switch.turn_on: fan_relay
     - topic: "${mqtt_main_topic}/relay/set"
-      payload: "OFF"
+      payload: "Off"
       then:
         - switch.turn_off: fan_relay
 
     # Override control
     - topic: "${mqtt_main_topic}/override/set"
-      payload: "ON"
+      payload: "On"
       then:
         - switch.turn_on: override_fans_on
     - topic: "${mqtt_main_topic}/override/set"
-      payload: "OFF"
+      payload: "Off"
       then:
-        - switch.turn_off: override_fans_on
\ No newline at end of file
+        - switch.turn_off: override_fans_on