diff --git a/themes/lumbung-theme/layouts/_default/baseof.html b/themes/lumbung-theme/layouts/_default/baseof.html
index 91bfcca..f684e82 100644
--- a/themes/lumbung-theme/layouts/_default/baseof.html
+++ b/themes/lumbung-theme/layouts/_default/baseof.html
@@ -31,8 +31,8 @@
 
         // for toggling submenus in mobile navigation drawer
         let submenuLinks = document.querySelectorAll('.drawer .has-submenu');
-        [...submenuLinks].forEach(function(submenuLink) {
-            submenuLink.addEventListener('click', () => {
+        [...submenuLinks].forEach(submenuLink => {
+            submenuLink.addEventListener('click', function() {
                 submenuLink.querySelector('.submenu').classList.toggle('opened')
             })
         })