diff --git a/main/inc/lib/add_course.lib.inc.php b/main/inc/lib/add_course.lib.inc.php
index 7f5107f232..9b911b078e 100755
--- a/main/inc/lib/add_course.lib.inc.php
+++ b/main/inc/lib/add_course.lib.inc.php
@@ -2,9 +2,7 @@
 /* For licensing terms, see /license.txt */
 
 use Chamilo\CoreBundle\Framework\Container;
-use Chamilo\CourseBundle\Entity\CTool;
 use Chamilo\CourseBundle\Entity\CToolIntro;
-use Chamilo\CourseBundle\Tool\BaseTool;
 
 /**
  * Class AddCourse.
@@ -448,7 +446,6 @@ class AddCourse
         $settingsManager = CourseManager::getCourseSettingsManager();
         $settingsManager->setCourse($course);
 
-
         $alert = api_get_setting('email_alert_manager_on_new_quiz');
         if ($alert === 'true') {
             $defaultEmailExerciseAlert = 1;
@@ -936,7 +933,7 @@ class AddCourse
     }
 
     /**
-     * @param array   $courseInfo
+     * @param array $courseInfo
      * @param int   $counter
      * @param array $file
      * @param int   $authorId
diff --git a/main/inc/lib/api.lib.php b/main/inc/lib/api.lib.php
index 2592531c30..4653d39493 100644
--- a/main/inc/lib/api.lib.php
+++ b/main/inc/lib/api.lib.php
@@ -1,13 +1,13 @@
 <?php
 /* For licensing terms, see /license.txt */
 
+use Chamilo\CoreBundle\Entity\Course;
+use Chamilo\CoreBundle\Entity\Session as SessionEntity;
 use Chamilo\CoreBundle\Entity\SettingsCurrent;
 use Chamilo\CoreBundle\Framework\Container;
 use Chamilo\CourseBundle\Entity\CItemProperty;
 use Chamilo\UserBundle\Entity\User;
 use ChamiloSession as Session;
-use Chamilo\CoreBundle\Entity\Session as SessionEntity;
-use Chamilo\CoreBundle\Entity\Course;
 use Symfony\Component\Finder\Finder;
 
 /**
diff --git a/main/inc/lib/course.lib.php b/main/inc/lib/course.lib.php
index 858c4237ae..9e3ead3fe5 100755
--- a/main/inc/lib/course.lib.php
+++ b/main/inc/lib/course.lib.php
@@ -2401,7 +2401,6 @@ class CourseManager
                     WHERE course_id = $courseId";
             Database::query($sql);
 
-
             $sql = "DELETE FROM skill_rel_course WHERE c_id = $courseId";
             Database::query($sql);
 
@@ -2421,8 +2420,6 @@ class CourseManager
             $extraFieldValues = new ExtraFieldValue('course');
             $extraFieldValues->deleteValuesByItem($courseId);
 
-
-
             // Add event to system log
             Event::addEvent(
                 LOG_COURSE_DELETE,
diff --git a/main/install/install.lib.php b/main/install/install.lib.php
index 4b5bde2ec6..e6f9cd6f4c 100755
--- a/main/install/install.lib.php
+++ b/main/install/install.lib.php
@@ -512,8 +512,8 @@ function get_language_folder_list()
  * WARNING - this function relies heavily on global variables $updateFromConfigFile
  * and $configFile, and also changes these globals. This can be rewritten.
  *
- * @param  string $param      the parameter of which the value is returned
- * @param  string $updatePath If we want to give the path rather than take it from POST
+ * @param string $param      the parameter of which the value is returned
+ * @param string $updatePath If we want to give the path rather than take it from POST
  *
  * @return string the value of the parameter
  *
diff --git a/main/social/personal_data.php b/main/social/personal_data.php
index fdee46ab9e..1b5c75d27f 100644
--- a/main/social/personal_data.php
+++ b/main/social/personal_data.php
@@ -373,11 +373,11 @@ if (api_get_setting('allow_terms_conditions') === 'true') {
         $permissionBlock .= get_lang('Date').': '.api_get_local_time($legalTime).'<br /><br />';
         $permissionBlock .= $formToString;
 
-        /*$permissionBlock .= Display::url(
-            get_lang('DeleteLegal'),
-            api_get_self().'?action=delete_legal&user_id='.$userId,
-            ['class' => 'btn btn-danger btn-xs']
-        );*/
+    /*$permissionBlock .= Display::url(
+        get_lang('DeleteLegal'),
+        api_get_self().'?action=delete_legal&user_id='.$userId,
+        ['class' => 'btn btn-danger btn-xs']
+    );*/
     } else {
         // @TODO add action handling for button
         $permissionBlock .= Display::url(
diff --git a/src/CoreBundle/Traits/CourseTrait.php b/src/CoreBundle/Traits/CourseTrait.php
index 42b5d55864..82e9cff50e 100644
--- a/src/CoreBundle/Traits/CourseTrait.php
+++ b/src/CoreBundle/Traits/CourseTrait.php
@@ -6,7 +6,7 @@ namespace Chamilo\CoreBundle\Traits;
 use Chamilo\CoreBundle\Entity\Course;
 
 /**
- * Trait CourseTrait
+ * Trait CourseTrait.
  */
 trait CourseTrait
 {
@@ -30,4 +30,3 @@ trait CourseTrait
         return $this;
     }
 }
-