diff --git a/src/application/controllers/appointments.php b/src/application/controllers/appointments.php
index a8fd125e..14d09e20 100755
--- a/src/application/controllers/appointments.php
+++ b/src/application/controllers/appointments.php
@@ -339,7 +339,11 @@ class Appointments extends CI_Controller {
             // Validate the CAPTCHA string.
             if ($this->settings_model->get_setting('require_captcha') === '1'
 					&&  $this->session->userdata('captcha_phrase') !== $_POST['captcha']) {
-                throw new Exception($this->lang->line('captcha_is_wrong'));
+				echo json_encode(array(
+					'captcha_verification' => FALSE,
+					'expected_phrase' => $this->session->userdata('captcha_phrase')
+				));
+				return;
             }
 
             // Check appointment availability.
diff --git a/src/application/views/appointments/book.php b/src/application/views/appointments/book.php
index c85902ca..6862f80f 100644
--- a/src/application/views/appointments/book.php
+++ b/src/application/views/appointments/book.php
@@ -373,6 +373,7 @@
                                 </h4>
                                 <img class="captcha-image" src="<?php echo $this->config->item('base_url'); ?>/index.php/captcha">
                                 <input class="captcha-text" type="text" value="" />
+                                <span id="captcha-hint" class="help-block" style="opacity:0">&nbsp;</span>
                             </div>
                         </div>
                         <?php endif; ?>
diff --git a/src/assets/css/frontend.css b/src/assets/css/frontend.css
index 87cbccb8..d612e26d 100644
--- a/src/assets/css/frontend.css
+++ b/src/assets/css/frontend.css
@@ -198,6 +198,8 @@ body {
 #book-appointment-wizard .captcha-image {
     float: right;
     margin-bottom: 20px;
+    border-radius: 3px;
+    box-shadow: 1px 1px 4px rgba(0,0,0,0.4);
 }
 
 #book-appointment-wizard .captcha-text {
diff --git a/src/assets/js/frontend_book.js b/src/assets/js/frontend_book.js
index b02abf20..26f772a5 100644
--- a/src/assets/js/frontend_book.js
+++ b/src/assets/js/frontend_book.js
@@ -620,7 +620,7 @@ var FrontendBook = {
         if ($captchaText.length > 0) {
             $captchaText.css('border', '');
             if ($captchaText.val() === '') {
-                $captchaText.css('border', '1px solid red');
+                $captchaText.css('border', '1px solid #dc3b40');
                 return;
             }
         }
@@ -668,6 +668,22 @@ var FrontendBook = {
                     return false;
                 }
 
+                if (response.captcha_verification === false) {
+                    $('#captcha-hint')
+                        .text(EALang['captcha_is_wrong'] + '(' + response.expected_phrase + ')')
+                        .fadeTo(400, 1);
+
+                    setTimeout(function() {
+                        $('#captcha-hint').fadeTo(400, 0);
+                    }, 3000);
+
+                    $('.captcha-title small').trigger('click');
+
+                    $captchaText.css('border', '1px solid #dc3b40');
+
+                    return false;
+                }
+
                 window.location.replace(GlobalVariables.baseUrl
                     + '/index.php/appointments/book_success/' + response.appointment_id);
             })