diff --git a/lms/static/js/courseware/bridge.js b/lms/static/js/courseware/bridge.js
index f8bad71a20c8..c988ceec76d5 100644
--- a/lms/static/js/courseware/bridge.js
+++ b/lms/static/js/courseware/bridge.js
@@ -44,7 +44,7 @@ function markProblemCompleted(message) {
 
   data.split("&").forEach(function (item) {
     const [inputId, answer] = item.split('=', 2);
-    problemContainer.find('input[id$="' + answer + '"], input[id$="' + inputId + '"]').each(function () {
+    problemContainer.find(`input[id$="${answer}"], input[id$="${inputId}"]`).each(function () {
       this.disabled = true;
       if (this.type === "checkbox" || this.type === "radio") {
         this.checked = true;
@@ -56,14 +56,14 @@ function markProblemCompleted(message) {
 }
 
 /**
- * Overrides the default $.ajax function to intercept the requests to the "problem_check" endpoint
- * and send the data to the native mobile apps.
+ * Overrides the default $.ajax function to intercept the requests to the "handler/xmodule_handler/problem_check"
+ * endpoint and send the data to the native mobile apps.
  *
  * @param {Object} options The data object for the ajax request
  */
 const originalAjax = $.ajax;
 $.ajax = function (options) {
-  if (options.url && options.url.endsWith("problem_check")) {
+  if (options.url && options.url.endsWith("handler/xmodule_handler/problem_check")) {
     sendMessageToIOS(JSON.stringify(options));
     sendMessageToAndroid(JSON.stringify(options));
   }
diff --git a/lms/static/js/spec/courseware/bridge_spec.js b/lms/static/js/spec/courseware/bridge_spec.js
index c30d64e999a9..4cd907802e69 100644
--- a/lms/static/js/spec/courseware/bridge_spec.js
+++ b/lms/static/js/spec/courseware/bridge_spec.js
@@ -70,7 +70,7 @@ describe('JS bridge for communication between native mobile apps and the xblock'
 
     it('should intercept the request to problem_check and send data to the native apps', function() {
       const ajaxOptions = {
-        url: 'http://example.com/problem_check',
+        url: 'http://example.com/handler/xmodule_handler/problem_check',
         data: {answer: 'test'}
       };
 
@@ -82,7 +82,7 @@ describe('JS bridge for communication between native mobile apps and the xblock'
 
     it('should call the original $.ajax function', function() {
       const ajaxOptions = {
-        url: 'http://example.com/problem_check',
+        url: 'http://example.com/handler/xmodule_handler/problem_check',
         data: {answer: 'test'}
       };