diff --git a/Updater.py b/Updater.py
index 19ead15..9bff65c 100755
--- a/Updater.py
+++ b/Updater.py
@@ -1,4 +1,8 @@
 #!/usr/bin/env python
+
+# Gui to get parameters for espota.py
+# espota.py is available https://raw.githubusercontent.com/esp8266/Arduino/master/tools/espota.py
+# and should be in the same directory
 from tkinter import *
 from tkinter import filedialog
 from tkinter.messagebox import *