diff --git a/main/inc/ajax/lang.ajax.php b/main/inc/ajax/lang.ajax.php
index 093cfbafc4..327b4edd07 100644
--- a/main/inc/ajax/lang.ajax.php
+++ b/main/inc/ajax/lang.ajax.php
@@ -17,9 +17,7 @@ switch ($action) {
         echo api_get_language_translate_html();
         break;
     case 'translate_portfolio_category':
-
         if (isset($_REQUEST['new_language']) && isset($_REQUEST['variable_language']) && isset($_REQUEST['category_id'])) {
-
             $newLanguage = Security::remove_XSS($_REQUEST['new_language']);
             $langVariable = Security::remove_XSS($_REQUEST['variable_language']);
             $categoryId = (int) $_REQUEST['category_id'];
diff --git a/main/inc/lib/PortfolioController.php b/main/inc/lib/PortfolioController.php
index 9c2a7abf25..669ad08f85 100644
--- a/main/inc/lib/PortfolioController.php
+++ b/main/inc/lib/PortfolioController.php
@@ -57,7 +57,6 @@ class PortfolioController
     }
 
     /**
-     *
      * @throws \Doctrine\ORM\ORMException
      * @throws \Doctrine\ORM\OptimisticLockException
      */
@@ -484,7 +483,7 @@ class PortfolioController
         $parentCategories = $this->getCategoriesForIndex(null, 0);
         foreach ($parentCategories as $parentCategory) {
             $categoriesSelect->addOption($parentCategory->getTitle(), $parentCategory->getId());
-            $subCategories =  $this->getCategoriesForIndex(null, $parentCategory->getId());
+            $subCategories = $this->getCategoriesForIndex(null, $parentCategory->getId());
             if (count($subCategories) > 0) {
                 foreach ($subCategories as $subCategory) {
                     $categoriesSelect->addOption(' — '.$subCategory->getTitle(), $subCategory->getId());
@@ -2919,7 +2918,7 @@ class PortfolioController
     }
 
     /**
-     * It parsers a title for a variable in lang
+     * It parsers a title for a variable in lang.
      *
      * @param $defaultDisplayText
      * @return string
@@ -2934,7 +2933,7 @@ class PortfolioController
     }
 
     /**
-     * It translates the text as parameter
+     * It translates the text as parameter.
      *
      * @param $defaultDisplayText
      * @return mixed
diff --git a/main/portfolio/index.php b/main/portfolio/index.php
index e8be2ca8c1..f85d9e6d41 100755
--- a/main/portfolio/index.php
+++ b/main/portfolio/index.php
@@ -23,7 +23,7 @@ $httpRequest = HttpRequest::createFromGlobals();
 $action = $httpRequest->query->get('action', 'list');
 
 // It validates the management of categories will be only for admins
-if (in_array($action , ['list_categories', 'add_category', 'edit_category']) && !api_is_platform_admin()) {
+if (in_array($action, ['list_categories', 'add_category', 'edit_category']) && !api_is_platform_admin()) {
     api_not_allowed(true);
 }
 
diff --git a/src/Chamilo/CoreBundle/Entity/PortfolioCategory.php b/src/Chamilo/CoreBundle/Entity/PortfolioCategory.php
index cb35e272c1..100b0f32f6 100644
--- a/src/Chamilo/CoreBundle/Entity/PortfolioCategory.php
+++ b/src/Chamilo/CoreBundle/Entity/PortfolioCategory.php
@@ -217,7 +217,11 @@ class PortfolioCategory
     }
 
     /**
+     * Set parent id
+     *
      * @param int $parentId
+     *
+     * @return PortfolioCategory
      */
     public function setParentId(int $parentId)
     {