diff --git a/app/assets/javascripts/discourse/app/widgets/header.js b/app/assets/javascripts/discourse/app/widgets/header.js
index 18d9c8e7028..e9b4ea2c0b7 100644
--- a/app/assets/javascripts/discourse/app/widgets/header.js
+++ b/app/assets/javascripts/discourse/app/widgets/header.js
@@ -24,7 +24,7 @@ export function clearExtraHeaderIcons() {
   _extraHeaderIcons = [];
 }
 
-const dropdown = {
+export const dropdown = {
   buildClasses(attrs) {
     let classes = attrs.classNames || [];
     if (attrs.active) {