diff --git a/main/admin/course_list.php b/main/admin/course_list.php
index 08226d8ece..c5086ac675 100755
--- a/main/admin/course_list.php
+++ b/main/admin/course_list.php
@@ -209,7 +209,7 @@ function get_course_data($from, $number_of_items, $column, $direction)
             $path.'admin/course_list.php?delete_course='.$courseCode,
             [
                 'onclick' => "javascript: if (!confirm('"
-                    .addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES))."')) return false;"
+                    .addslashes(api_htmlentities(get_lang('ConfirmYourChoice'), ENT_QUOTES))."')) return false;",
             ]
         );
 
diff --git a/main/document/downloadfolder.inc.php b/main/document/downloadfolder.inc.php
index 9acb9c6978..8d1585495a 100755
--- a/main/document/downloadfolder.inc.php
+++ b/main/document/downloadfolder.inc.php
@@ -175,8 +175,6 @@ if (api_is_allowed_to_edit()) {
                 }
             }
         }
-        //error_log($sysCoursePath.$courseInfo['path'].'/document'.$not_deleted_file['path']);
-        //error_log($sysCoursePath.$courseInfo['path'].'/document'.$remove_dir);
         $zip->add(
             $sysCoursePath.$courseInfo['path'].'/document'.$not_deleted_file['path'],
             PCLZIP_OPT_REMOVE_PATH,
@@ -189,7 +187,6 @@ if (api_is_allowed_to_edit()) {
     Session::erase('doc_files_to_download');
 } else {
     // For other users, we need to create a zip  file with only visible files and folders
-
     if ($path == '/') {
         $querypath = ''; // To prevent ...path LIKE '//%'... in query
     } else {
diff --git a/main/exercise/exercise.class.php b/main/exercise/exercise.class.php
index aa39ac0625..cddab48f69 100755
--- a/main/exercise/exercise.class.php
+++ b/main/exercise/exercise.class.php
@@ -6550,6 +6550,7 @@ class Exercise
             if ($isRandomByCategory == 1) {
                 shuffle($questionList); // or not
             }
+
             return $questionList;
         }
 
diff --git a/main/lp/lp_edit.php b/main/lp/lp_edit.php
index d45713b3d2..de2621f616 100755
--- a/main/lp/lp_edit.php
+++ b/main/lp/lp_edit.php
@@ -158,7 +158,6 @@ $form->addElement('html', '<div class="help-block">'.get_lang('LpPrerequisiteDes
 $form->addElement('html', '</div>');
 $form->addElement('html', '<div class="col-md-2"></div>');
 $form->addElement('html', '</div>');
-
 // Time Control
 if (Tracking::minimunTimeAvailable(api_get_session_id(), api_get_course_int_id())) {
     $accumulateTime = $_SESSION['oLP']->getAccumulateWorkTime();