diff --git a/stdplugins/randomsticker.py b/stdplugins/randomsticker.py
index 2aa47e5..b48ed8d 100644
--- a/stdplugins/randomsticker.py
+++ b/stdplugins/randomsticker.py
@@ -1,3 +1,7 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
 import random
 
 from telethon import events, types, functions, utils