diff --git a/mqtt.py b/mqtt.py
index 9d87461..04ed5df 100644
--- a/mqtt.py
+++ b/mqtt.py
@@ -1,5 +1,4 @@
 import random
-import time
 import json
 
 from paho.mqtt import client as mqtt_client
@@ -40,10 +39,10 @@ def connect_mqtt() -> mqtt_client:
 
 
 def publish(client):
-    result = client.publish("ledLight/state", "on")
+    result = client.publish("ledLight/state", "ON")
     status = result[0]
     if status == 0:
-        print(f"Send `on` to topic `{topic}`")
+        print(f"Send `ON` to topic `{topic}`")
     else:
         print(f"Failed to send message to topic {topic}")