diff --git a/kittens/diff/options/definition.py b/kittens/diff/options/definition.py
index 359631705..b6c8c80d1 100644
--- a/kittens/diff/options/definition.py
+++ b/kittens/diff/options/definition.py
@@ -1,3 +1,9 @@
+#!/usr/bin/env python
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2021, Kovid Goyal <kovid at kovidgoyal.net>
+
+# After editing this file run ./gen-config.py to apply the changes
+
 from kitty.conf.types import Action, Definition
 
 
diff --git a/kitty/options/definition.py b/kitty/options/definition.py
index 9bf867752..67ffa8e32 100644
--- a/kitty/options/definition.py
+++ b/kitty/options/definition.py
@@ -1,3 +1,9 @@
+#!/usr/bin/env python
+# vim:fileencoding=utf-8
+# License: GPLv3 Copyright: 2021, Kovid Goyal <kovid at kovidgoyal.net>
+
+# After editing this file run ./gen-config.py to apply the changes
+
 from kitty.conf.types import Action, Definition