diff --git a/.env b/.env
deleted file mode 100644
index 9bb55d5..0000000
--- a/.env
+++ /dev/null
@@ -1,6 +0,0 @@
-BROKER = ""
-PORT = 1883
-SUB_TOPIC = ""
-PUB_TOPIC = ""
-USERNAME = ""
-PASSWORD = ""
\ No newline at end of file
diff --git a/mqtt.py b/mqtt.py
index 71b1327..99a8de5 100644
--- a/mqtt.py
+++ b/mqtt.py
@@ -9,7 +9,7 @@ from lib.shared import run_bulb_action, convert_to_bulb_format
 load_dotenv()
 
 broker = os.getenv("BROKER")
-port = os.getenv("PORT")
+port = int(os.getenv("PORT"))
 topic = os.getenv("SUB_TOPIC")
 # generate client ID with pub prefix randomly
 client_id = f"python-mqtt-{random.randint(0, 100)}"
@@ -32,7 +32,7 @@ def connect_mqtt() -> mqtt_client:
 
 
 def publish(client):
-    result = client.publish(os.getenv('PUB_TOPIC'), "ON")
+    result = client.publish(os.getenv("PUB_TOPIC"), "ON")
     status = result[0]
     if status == 0:
         print(f"Send `ON` to topic `{topic}`")