diff --git a/website/js/thorium.js b/website/js/button.js
similarity index 88%
rename from website/js/thorium.js
rename to website/js/button.js
index ad453d5a..ae260eea 100644
--- a/website/js/thorium.js
+++ b/website/js/button.js
@@ -1,3 +1,5 @@
+// Dark mode button.
+
 document.querySelector('button').onclick = function() {
         useDark = !useDark;
         toggleDarkMode(useDark);