diff --git a/main/install/install.lib.php b/main/install/install.lib.php
index b1fe782b90..d53faf47a5 100755
--- a/main/install/install.lib.php
+++ b/main/install/install.lib.php
@@ -4,6 +4,7 @@
 use Chamilo\CoreBundle\Entity\AccessUrl;
 use Chamilo\CoreBundle\Entity\ExtraField;
 use Chamilo\CoreBundle\Framework\Container;
+use Chamilo\CoreBundle\ToolChain;
 use Chamilo\TicketBundle\Entity\Category as TicketCategory;
 use Chamilo\TicketBundle\Entity\Priority as TicketPriority;
 use Chamilo\TicketBundle\Entity\Project as TicketProject;
@@ -3026,7 +3027,7 @@ function installSchemas($container, $manager, $upgrade = false)
     $settingsManager = Container::getSettingsManager();
 
     // Install course tools (table "tool")
-    $toolChain = $container->get('chamilo_core.tool_chain');
+    $toolChain = $container->get(ToolChain::class);
     $toolChain->createTools($manager);
 
     $urlRepo = $container->get('Chamilo\CoreBundle\Repository\AccessUrlRepository');
diff --git a/src/CoreBundle/DependencyInjection/Compiler/ToolCompilerClass.php b/src/CoreBundle/DependencyInjection/Compiler/ToolCompilerClass.php
index 8ff234448b..7144a64ccf 100644
--- a/src/CoreBundle/DependencyInjection/Compiler/ToolCompilerClass.php
+++ b/src/CoreBundle/DependencyInjection/Compiler/ToolCompilerClass.php
@@ -12,6 +12,9 @@ use Symfony\Component\DependencyInjection\Reference;
  * Class ToolCompilerClass.
  * Search the services with tag "chamilo_core.tool" in order to be added
  * as a tool (Documents, Notebook, etc).
+ *
+ * See:
+ * https://symfony.com/doc/current/service_container/tags.html
  */
 class ToolCompilerClass implements CompilerPassInterface
 {