diff --git a/ts/reviewer/mathjax.ts b/ts/reviewer/mathjax.ts
index 7fcbcfcbf..58e9d91ab 100644
--- a/ts/reviewer/mathjax.ts
+++ b/ts/reviewer/mathjax.ts
@@ -1,3 +1,6 @@
+// Copyright: Ankitects Pty Ltd and contributors
+// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+
 import { mathjax } from "mathjax-full/js/mathjax";
 import { TeX } from "mathjax-full/js/input/tex";
 import { CHTML } from "mathjax-full/js/output/chtml";