diff --git a/main/document/edit_draw.php b/main/document/edit_draw.php
index 4f10c7f236..3ecafe8958 100755
--- a/main/document/edit_draw.php
+++ b/main/document/edit_draw.php
@@ -14,7 +14,7 @@ require_once '../inc/global.inc.php';
 $_SESSION['whereami'] = 'document/editdraw';
 $this_section = SECTION_COURSES;
 
-api_protect_course_script();
+api_protect_course_script(true);
 api_block_anonymous_users();
 
 $document_data = DocumentManager::get_document_data_by_id($_GET['id'], api_get_course_id(), true);
diff --git a/main/document/edit_paint.php b/main/document/edit_paint.php
index a175f55dfb..86a3db2254 100755
--- a/main/document/edit_paint.php
+++ b/main/document/edit_paint.php
@@ -14,7 +14,7 @@ require_once '../inc/global.inc.php';
 $_SESSION['whereami'] = 'document/editpaint';
 $this_section = SECTION_COURSES;
 
-api_protect_course_script();
+api_protect_course_script(true);
 api_block_anonymous_users();
 $groupId = api_get_group_id();
 $document_data = DocumentManager::get_document_data_by_id(
diff --git a/main/document/exit_pixlr.php b/main/document/exit_pixlr.php
index a8e3bc6f0e..49b4724f7d 100755
--- a/main/document/exit_pixlr.php
+++ b/main/document/exit_pixlr.php
@@ -11,7 +11,7 @@
 */
 
 require_once '../inc/global.inc.php';
-api_protect_course_script();
+api_protect_course_script(true);
 api_block_anonymous_users();
 
 //delete temporal file
diff --git a/main/gradebook/gradebook_add_eval.php b/main/gradebook/gradebook_add_eval.php
index ecd48a1a92..c3dd2395d6 100755
--- a/main/gradebook/gradebook_add_eval.php
+++ b/main/gradebook/gradebook_add_eval.php
@@ -8,7 +8,7 @@
 require_once '../inc/global.inc.php';
 $current_course_tool = TOOL_GRADEBOOK;
 
-api_protect_course_script();
+api_protect_course_script(true);
 api_block_anonymous_users();
 GradebookUtils::block_students();
 
diff --git a/main/gradebook/gradebook_add_link.php b/main/gradebook/gradebook_add_link.php
index a49f5fe9dd..58e7a20957 100755
--- a/main/gradebook/gradebook_add_link.php
+++ b/main/gradebook/gradebook_add_link.php
@@ -9,7 +9,7 @@ require_once '../inc/global.inc.php';
 require_once '../forum/forumfunction.inc.php';
 $current_course_tool = TOOL_GRADEBOOK;
 
-api_protect_course_script();
+api_protect_course_script(true);
 api_block_anonymous_users();
 GradebookUtils::block_students();
 
diff --git a/main/gradebook/gradebook_add_link_select_course.php b/main/gradebook/gradebook_add_link_select_course.php
index 1f03c162c7..b9a063e6a3 100755
--- a/main/gradebook/gradebook_add_link_select_course.php
+++ b/main/gradebook/gradebook_add_link_select_course.php
@@ -9,7 +9,7 @@
 require_once '../inc/global.inc.php';
 $current_course_tool  = TOOL_GRADEBOOK;
 
-api_protect_course_script();
+api_protect_course_script(true);
 api_block_anonymous_users();
 GradebookUtils::block_students();
 
diff --git a/main/gradebook/gradebook_add_result.php b/main/gradebook/gradebook_add_result.php
index 4233e6538f..f62f6c38ad 100755
--- a/main/gradebook/gradebook_add_result.php
+++ b/main/gradebook/gradebook_add_result.php
@@ -9,7 +9,7 @@
 require_once '../inc/global.inc.php';
 $current_course_tool  = TOOL_GRADEBOOK;
 
-api_protect_course_script();
+api_protect_course_script(true);
 api_block_anonymous_users();
 GradebookUtils::block_students();
 
diff --git a/main/gradebook/gradebook_display_certificate.php b/main/gradebook/gradebook_display_certificate.php
index b91350e250..c44f150c1b 100755
--- a/main/gradebook/gradebook_display_certificate.php
+++ b/main/gradebook/gradebook_display_certificate.php
@@ -9,7 +9,7 @@ require_once '../inc/global.inc.php';
 $current_course_tool  = TOOL_GRADEBOOK;
 
 if (!api_is_student_boss()) {
-    api_protect_course_script();
+    api_protect_course_script(true);
 }
 
 set_time_limit(0);
diff --git a/main/gradebook/gradebook_edit_all.php b/main/gradebook/gradebook_edit_all.php
index f50e716a1b..7af15b4fd3 100755
--- a/main/gradebook/gradebook_edit_all.php
+++ b/main/gradebook/gradebook_edit_all.php
@@ -12,7 +12,7 @@ require_once '../inc/global.inc.php';
 $this_section = SECTION_COURSES;
 $current_course_tool = TOOL_GRADEBOOK;
 
-api_protect_course_script();
+api_protect_course_script(true);
 api_block_anonymous_users();
 
 if (!api_is_allowed_to_edit()) {
diff --git a/main/gradebook/gradebook_flatview.php b/main/gradebook/gradebook_flatview.php
index 8cf81c034d..0beae31dae 100755
--- a/main/gradebook/gradebook_flatview.php
+++ b/main/gradebook/gradebook_flatview.php
@@ -8,7 +8,7 @@
 require_once '../inc/global.inc.php';
 $current_course_tool  = TOOL_GRADEBOOK;
 
-api_protect_course_script();
+api_protect_course_script(true);
 
 api_block_anonymous_users();
 $isDrhOfCourse = CourseManager::isUserSubscribedInCourseAsDrh(
@@ -199,7 +199,9 @@ if (isset($_GET['print']))	{
     exit;
 }
 
-if (!empty($_GET['export_report']) && $_GET['export_report'] == 'export_report') {
+if (!empty($_GET['export_report']) &&
+    $_GET['export_report'] == 'export_report'
+) {
     if (api_is_platform_admin() || api_is_course_admin() || api_is_course_coach() || $isDrhOfCourse) {
         $user_id = null;
 
diff --git a/main/gradebook/index.php b/main/gradebook/index.php
index 054bbfa58a..d851972784 100755
--- a/main/gradebook/index.php
+++ b/main/gradebook/index.php
@@ -12,7 +12,7 @@ $_in_course = true;
 require_once '../inc/global.inc.php';
 $current_course_tool  = TOOL_GRADEBOOK;
 
-api_protect_course_script();
+api_protect_course_script(true);
 
 $course_code 	= api_get_course_id();
 $stud_id        = api_get_user_id();
diff --git a/main/user/class.php b/main/user/class.php
index 766d282e21..7c75171b11 100755
--- a/main/user/class.php
+++ b/main/user/class.php
@@ -3,13 +3,11 @@
 /**
 *	@package chamilo.user
 */
-/**
- * INIT SECTION
- */
+
 require_once '../inc/global.inc.php';
 $this_section = SECTION_COURSES;
 
-api_protect_course_script();
+api_protect_course_script(true);
 
 if (api_get_setting('allow_user_course_subscription_by_course_admin') == 'false') {
     if (!api_is_platform_admin()) {
@@ -34,7 +32,7 @@ $usergroup = new UserGroup();
 if (api_is_allowed_to_edit()) {
     echo '<div class="actions">';
     if ($type == 'registered') {
-        echo '<a href="class.php?'.api_get_cidreq().'&type=not_registered">'.Display::return_icon('add.png', get_lang("AddClassesToACourse"), array(), ICON_SIZE_MEDIUM).'</a>';        
+        echo '<a href="class.php?'.api_get_cidreq().'&type=not_registered">'.Display::return_icon('add.png', get_lang("AddClassesToACourse"), array(), ICON_SIZE_MEDIUM).'</a>';
     } else {
         echo '<a href="class.php?'.api_get_cidreq().'&type=registered">'.Display::return_icon('empty_evaluation.png', get_lang("Classes"), array(), ICON_SIZE_MEDIUM).'</a>';
     }
@@ -53,7 +51,7 @@ if (api_is_allowed_to_edit()) {
             }
             break;
         case 'remove_class_from_course':
-            $id = $_GET['id'];            
+            $id = $_GET['id'];
             if (!empty($id)) {
                 $usergroup->unsubscribe_courses_from_usergroup($id, array(api_get_course_int_id()));
             }
@@ -70,8 +68,8 @@ $columns = array(get_lang('Name'), get_lang('Users'), get_lang('Actions'));
 
 //Column config
 $column_model = array(
-                    array('name'=>'name',           'index'=>'name',        'width'=>'35',   'align'=>'left'),                        
-                    array('name'=>'users',    		'index'=>'users', 		'width'=>'15',  'align'=>'left'),                                                
+                    array('name'=>'name',           'index'=>'name',        'width'=>'35',   'align'=>'left'),
+                    array('name'=>'users',    		'index'=>'users', 		'width'=>'15',  'align'=>'left'),
                     array('name'=>'actions',        'index'=>'actions',     'width'=>'20',  'align'=>'left','sortable'=>'false'),
 );
 //Autowidth
@@ -83,7 +81,7 @@ $extra_params['height'] = 'auto';
 //With this function we can add actions to the jgrid
 $action_links = 'function action_formatter (cellvalue, options, rowObject) {
                     return \''
-                    .' <a href="class.php?action=add_class&id=\'+options.rowId+\'"><img src="../img/icons/22/user_to_class.png" title="'.get_lang('SubscribeUsersToClass').'"></a>'                    
+                    .' <a href="class.php?action=add_class&id=\'+options.rowId+\'"><img src="../img/icons/22/user_to_class.png" title="'.get_lang('SubscribeUsersToClass').'"></a>'
                     .' <a onclick="javascript:if(!confirm('."\'".addslashes(api_htmlentities(get_lang("ConfirmYourChoice"),ENT_QUOTES))."\'".')) return false;"  href="?action=delete&id=\'+options.rowId+\'"><img title="'.get_lang('Delete').'" src="../img/delete.png"></a>\';
                  }';
 ?>
@@ -97,4 +95,4 @@ $(function() {
 </script>
 <?php
 $usergroup->display_teacher_view();
-Display :: display_footer();
\ No newline at end of file
+Display :: display_footer();