diff --git a/src/Python/flask/web/app.py b/src/Python/flask/web/app.py
index 10b896b..e0be6b2 100644
--- a/src/Python/flask/web/app.py
+++ b/src/Python/flask/web/app.py
@@ -2,7 +2,7 @@ from flask import Flask, request, render_template, jsonify
 import paho.mqtt.client as mqtt
 
 app = Flask(__name__)
-
+# This function gets triggered when it receives a mqtt message
 def on_message(client, userdata, message):
     global kobuki_message #set scope for this variable
     kobuki_message = str(message.payload.decode("utf-8"))