diff --git a/public/main/inc/lib/course_category.lib.php b/public/main/inc/lib/course_category.lib.php
index a41f7a07bb..c2a46fa0e2 100644
--- a/public/main/inc/lib/course_category.lib.php
+++ b/public/main/inc/lib/course_category.lib.php
@@ -4,9 +4,7 @@
 
 use Chamilo\CoreBundle\Entity\Asset;
 use Chamilo\CoreBundle\Entity\CourseCategory as CourseCategoryEntity;
-use Chamilo\CoreBundle\Entity\User;
 use Chamilo\CoreBundle\Framework\Container;
-use Doctrine\Common\Collections\Criteria;
 
 class CourseCategory
 {
diff --git a/src/CoreBundle/Resources/config/services.yml b/src/CoreBundle/Resources/config/services.yml
index 9dd3f0b897..718b274d2f 100644
--- a/src/CoreBundle/Resources/config/services.yml
+++ b/src/CoreBundle/Resources/config/services.yml
@@ -76,4 +76,4 @@ services:
 
     Chamilo\CoreBundle\Tool\HandlerCollection:
         arguments:
-            - !tagged_iterator chamilo_core.tool_handler
\ No newline at end of file
+            - !tagged_iterator chamilo_core.tool_handler
diff --git a/src/CoreBundle/Tool/Link.php b/src/CoreBundle/Tool/Link.php
index e43a518d5f..b3b4b0ef35 100644
--- a/src/CoreBundle/Tool/Link.php
+++ b/src/CoreBundle/Tool/Link.php
@@ -20,6 +20,7 @@ class Link extends AbstractTool implements ToolInterface
     {
         return 'authoring';
     }
+
     public function getIcon(): string
     {
         return 'mdi-file-link';