diff --git a/mqtt.py b/mqtt.py
index ca95057..9d87461 100644
--- a/mqtt.py
+++ b/mqtt.py
@@ -51,12 +51,12 @@ def publish(client):
 def subscribe(client: mqtt_client):
     def on_message(client, userdata, msg):
         print(f"Received `{msg.payload.decode()}` from `{msg.topic}` topic")
-        a = json.loads(msg.payload.decode())
-        if "color" in a:
-            hex = convert_to_bulb_format(a)
+        json_response = json.loads(msg.payload.decode())
+        if "color" in json_response:
+            hex = convert_to_bulb_format(json_response)
             run_bulb_action(hex)
         else:
-            if a["state"] == "OFF":
+            if json_response["state"] == "OFF":
                 run_bulb_action("cc2433")
             else:
                 run_bulb_action("cc2333")