diff --git a/application/views/appointments/book.php b/application/views/appointments/book.php
index 6a4e77cb..47e511bc 100755
--- a/application/views/appointments/book.php
+++ b/application/views/appointments/book.php
@@ -366,7 +366,7 @@
                                     <small class="fas fa-sync-alt"></small>
                                 </h4>
                                 <img class="captcha-image" src="<?= site_url('captcha') ?>">
-                                <input class="captcha-text" type="text" value=""/>
+                                <input class="captcha-text form-control" type="text" value=""/>
                                 <span id="captcha-hint" class="help-block" style="opacity:0">&nbsp;</span>
                             </div>
                         </div>
diff --git a/assets/js/frontend_book.js b/assets/js/frontend_book.js
index f587270c..3c6a6f0c 100644
--- a/assets/js/frontend_book.js
+++ b/assets/js/frontend_book.js
@@ -424,7 +424,7 @@ window.FrontendBook = window.FrontendBook || {};
          *
          * @param {jQuery.Event} event
          */
-        $('#book-appointment-submit').on('click', function (event) {
+        $('#book-appointment-submit').on('click', function () {
             FrontendBookApi.registerAppointment();
         });
 
@@ -433,7 +433,7 @@ window.FrontendBook = window.FrontendBook || {};
          *
          * @param {jQuery.Event} event
          */
-        $('.captcha-title small').on('click', function (event) {
+        $('.captcha-title svg').on('click', function (event) {
             $('.captcha-image').attr('src', GlobalVariables.baseUrl + '/index.php/captcha?' + Date.now());
         });
 
diff --git a/assets/js/frontend_book_api.js b/assets/js/frontend_book_api.js
index 5fd9cecb..119eeaed 100755
--- a/assets/js/frontend_book_api.js
+++ b/assets/js/frontend_book_api.js
@@ -146,7 +146,8 @@ window.FrontendBookApi = window.FrontendBookApi || {};
             }
         }
 
-        var formData = jQuery.parseJSON($('input[name="post_data"]').val());
+        var formData = JSON.parse($('input[name="post_data"]').val());
+
         var data = {
             csrfToken: GlobalVariables.csrfToken,
             post_data: formData
@@ -193,7 +194,7 @@ window.FrontendBookApi = window.FrontendBookApi || {};
                         $('#captcha-hint').fadeTo(400, 0);
                     }, 3000);
 
-                    $('.captcha-title small').trigger('click');
+                    $('.captcha-title svg').trigger('click');
 
                     $captchaText.closest('.form-group').addClass('has-error');
 
@@ -204,7 +205,7 @@ window.FrontendBookApi = window.FrontendBookApi || {};
                     + '/index.php/appointments/book_success/' + response.appointment_hash;
             })
             .fail(function (jqxhr, textStatus, errorThrown) {
-                $('.captcha-title small').trigger('click');
+                $('.captcha-title svg').trigger('click');
             })
             .always(function () {
                 $layer.remove();