diff --git a/app/app.py b/app/app.py
index 31811fc..0fb4d12 100644
--- a/app/app.py
+++ b/app/app.py
@@ -1,3 +1,7 @@
+'''
+Simple GUI to facilitate interaction with Fawkes.
+'''
+
 import threading
 from tkinter import Tk, BOTH, StringVar
 from tkinter.filedialog import askopenfilenames