diff --git a/js/functions.js b/js/functions.js
index 4d6d441787..a94c3b9450 100644
--- a/js/functions.js
+++ b/js/functions.js
@@ -4890,7 +4890,8 @@ Functions.toggleDatepickerIfInvalid = function ($td, $inputField) {
  * Function to submit the login form after validation is done.
  * NOTE: do NOT use a module or it will break the callback, issue #15435
  */
-Functions_recaptchaCallback = function () {
+// eslint-disable-next-line no-unused-vars, camelcase
+var Functions_recaptchaCallback = function () {
     $('#login_form').trigger('submit');
 };