diff --git a/main/chat/chat.php b/main/chat/chat.php
index 4044e62382..77bf1c5bc3 100755
--- a/main/chat/chat.php
+++ b/main/chat/chat.php
@@ -1,4 +1,5 @@
 <?php
+
 /* For licensing terms, see /license.txt */
 
 define('CHAMILO_LOAD_WYSIWYG', false);
@@ -11,14 +12,11 @@ Event::event_access_tool(TOOL_CHAT);
 
 $logInfo = [
     'tool' => TOOL_CHAT,
-    'tool_id' => 0,
-    'tool_id_detail' => 0,
     'action' => 'start',
     'action_details' => 'start-chat',
 ];
 Event::registerLog($logInfo);
 
-// View
 $externalCSS = [
     'jquery-emojiarea/jquery.emojiarea.css',
     'jquery-textcomplete/jquery.textcomplete.css',
diff --git a/main/inc/lib/CourseChatUtils.php b/main/inc/lib/CourseChatUtils.php
index 36dfdf1efc..2021380b90 100644
--- a/main/inc/lib/CourseChatUtils.php
+++ b/main/inc/lib/CourseChatUtils.php
@@ -1,4 +1,5 @@
 <?php
+
 /* For licensing terms, see /license.txt */
 
 use Chamilo\CoreBundle\Entity\Course;
@@ -294,7 +295,7 @@ class CourseChatUtils
         $connection = $em
             ->createQuery("
                 SELECT ccc FROM ChamiloCourseBundle:CChatConnected ccc
-                WHERE ccc.userId = :user AND ccc.cId = :course $extraCondition 
+                WHERE ccc.userId = :user AND ccc.cId = :course $extraCondition
             ")
             ->setParameters([
                 'user' => $this->userId,
diff --git a/main/template/default/chat/chat.tpl b/main/template/default/chat/chat.tpl
index 08f1cc6dcb..38ad4a35fc 100644
--- a/main/template/default/chat/chat.tpl
+++ b/main/template/default/chat/chat.tpl
@@ -136,18 +136,17 @@ $(function () {
             $('#chat-users').html(html);
         },
         onPreviewListener: function () {
-            $
-                .post(ChChat._ajaxUrl, {
-                    action: 'preview',
-                    'message': $('textarea#chat-writer').val()
-                })
-                .done(function (response) {
-                    if (!response.status) {
-                        return;
-                    }
+            $.post(ChChat._ajaxUrl, {
+                action: 'preview',
+                'message': $('textarea#chat-writer').val()
+            })
+            .done(function (response) {
+                if (!response.status) {
+                    return;
+                }
 
-                    $('#html-preview').html(response.data.message);
-                });
+                $('#html-preview').html(response.data.message);
+            });
         },
         onSendMessageListener: function (e) {
             e.preventDefault();
@@ -159,40 +158,38 @@ $(function () {
             var self = this;
             self.disabled = true;
 
-            $
-                .post(ChChat._ajaxUrl, {
-                    action: 'write',
-                    message: $('textarea#chat-writer').val(),
-                    friend: ChChat.currentFriend
-                })
-                .done(function (response) {
-                    self.disabled = false;
+            $.post(ChChat._ajaxUrl, {
+                action: 'write',
+                message: $('textarea#chat-writer').val(),
+                friend: ChChat.currentFriend
+            })
+            .done(function (response) {
+                self.disabled = false;
 
-                    if (!response.status) {
-                        return;
-                    }
+                if (!response.status) {
+                    return;
+                }
 
-                    $('textarea#chat-writer').val('');
-                    $(".emoji-wysiwyg-editor").html('');
-                });
+                $('textarea#chat-writer').val('');
+                $(".emoji-wysiwyg-editor").html('');
+            });
         },
         onResetListener: function (e) {
             if (!confirm("{{ 'ConfirmReset'|get_lang }}")) {
                 e.preventDefault();
                 return;
             }
-            $
-                .get(ChChat._ajaxUrl, {
-                    action: 'reset',
-                    friend: ChChat.currentFriend
-                })
-                .done(function (response) {
-                    if (!response.status) {
-                        return;
-                    }
+            $.get(ChChat._ajaxUrl, {
+                action: 'reset',
+                friend: ChChat.currentFriend
+            })
+            .done(function (response) {
+                if (!response.status) {
+                    return;
+                }
 
-                    ChChat.setHistory(response.data);
-                });
+                ChChat.setHistory(response.data);
+            });
         },
         init: function () {
             ChChat.track().done(function () {
@@ -219,13 +216,13 @@ $(function () {
 
     $('body').on('click', '#chat-reset', ChChat.onResetListener);
     $('#preview').on('click', ChChat.onPreviewListener);
+
     $('#emojis').on('click', function () {
         $('[data-toggle="tab"][href="#tab1"]').show().tab('show');
     });
 
-    $('textarea#chat-writer').emojiarea({
-        button: '#emojis'
-    });
+
+    $('textarea#chat-writer').emojiarea({button: '#emojis'});
 
     $('body').delay(1500).find('.emoji-wysiwyg-editor').textcomplete([{
         match: /\B:([\-+\w]*)$/,
@@ -271,6 +268,7 @@ $(function () {
     }], {});
 
     $('button#chat-send-message').on('click', ChChat.onSendMessageListener);
+
     $('#chat-users').on('click', 'div.chat-user', function (e) {
         e.preventDefault();
         var jSelf = $(this),