diff --git a/.coveralls.yml b/.coveralls.yml
deleted file mode 100644
index 9320fb2..0000000
--- a/.coveralls.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-service_name: travis-ci
-src_dir: ./
-coverage_clover: build/logs/clover.xml
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index d253dd9..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-language: php
-
-php:
-  - "7.1"
-  - "7.3"
-
-env:
-  - SYMFONY_VERSION=3.4.*
-  - SYMFONY_VERSION=4.3.*
-
-before_script:
-  - composer self-update
-  - if [ "$SYMFONY_VERSION" != "" ]; then composer require "symfony/dependency-injection:${SYMFONY_VERSION}" --no-update; fi;
-  - if [ "$SYMFONY_VERSION" != "" ]; then composer require "symfony/config:${SYMFONY_VERSION}" --no-update; fi;
-  - if [ "$SYMFONY_VERSION" != "" ]; then composer require "symfony/http-kernel:${SYMFONY_VERSION}" --no-update; fi;
-  - if [ "$SYMFONY_VERSION" != "" ]; then composer require "symfony/security:${SYMFONY_VERSION}" --no-update; fi;
-  - if [ "$SYMFONY_VERSION" != "" ]; then composer require "symfony/event-dispatcher:${SYMFONY_VERSION}" --no-update; fi;
-  - composer install --no-scripts --no-interaction --dev
-  - composer dump-autoload -o
-
-after_script:
-    - php vendor/bin/coveralls -v
-
-script:
-    - ./vendor/bin/phpunit --coverage-clover build/logs/clover.xml
diff --git a/Resources/config/services.xml b/Resources/config/services.xml
index e7cec74..f297e83 100644
--- a/Resources/config/services.xml
+++ b/Resources/config/services.xml
@@ -7,6 +7,7 @@
             <call method="setReader">
                 <argument type="service" id="annotation_reader"/>
             </call>
+            <argument type="service" id="security.authorization_checker"/>
         </service>
         <service id="openclassrooms.use_case.security_factory" class="OpenClassrooms\Bundle\UseCaseBundle\Services\Security\Impl\SecurityFactoryImpl" public="true"/>
         <service id="openclassrooms.use_case.transaction_factory" class="OpenClassrooms\Bundle\UseCaseBundle\Services\Transaction\Impl\TransactionFactoryImpl" public="true"/>
diff --git a/Services/Proxy/Impl/UseCaseProxyFactoryImpl.php b/Services/Proxy/Impl/UseCaseProxyFactoryImpl.php
index bff305f..0af9534 100644
--- a/Services/Proxy/Impl/UseCaseProxyFactoryImpl.php
+++ b/Services/Proxy/Impl/UseCaseProxyFactoryImpl.php
@@ -48,7 +48,9 @@ class UseCaseProxyFactoryImpl implements UseCaseProxyFactory
      */
     private $builder;
 
-    public function __construct()
+    public function __construct(
+        private readonly AuthorizationCheckerInterface $authorizationChecker
+    )
     {
         $this->builder = new UseCaseProxyBuilderImpl();
     }
@@ -114,15 +116,7 @@ private function buildSecurity(array $tagParameters)
         if (isset($tagParameters['security'])) {
             $security = $this->container->get($tagParameters['security']);
         } else {
-            $defaultSecurityContextId = $this->container->getParameter(
-                'openclassrooms.use_case.default_authorization_checker'
-            );
-            if (!$this->container->has($defaultSecurityContextId)) {
-                throw new SecurityIsNotDefinedException('Default security context: \''.$defaultSecurityContextId.'\' is not defined.');
-            }
-            $security = $this->container->get(
-                $this->container->getParameter('openclassrooms.use_case.default_authorization_checker')
-            );
+            $security = $this->authorizationChecker;
         }
         if ($security instanceof AuthorizationCheckerInterface) {
             /** @var SecurityFactory $securityFactory */
diff --git a/Tests/DependencyInjection/Fixtures/Resources/config/services.xml b/Tests/DependencyInjection/Fixtures/Resources/config/services.xml
index 8e945b7..f408055 100644
--- a/Tests/DependencyInjection/Fixtures/Resources/config/services.xml
+++ b/Tests/DependencyInjection/Fixtures/Resources/config/services.xml
@@ -16,6 +16,7 @@
         <parameter key="openclassrooms.tests.use_cases.event_use_case_stub.class">OpenClassrooms\Bundle\UseCaseBundle\Tests\DependencyInjection\Fixtures\BusinessRules\UseCases\EventUseCaseStub</parameter>
     </parameters>
     <services>
+        <service id="security.authorization_checker" class="OpenClassrooms\Bundle\UseCaseBundle\Tests\DependencyInjection\Fixtures\Util\AuthorizationCheckerSpy"/>
         <service id="annotation_reader" class="Doctrine\Common\Annotations\AnnotationReader"/>
         <service id="openclassrooms.tests.util.security_stub" class="%openclassrooms.tests.util.security_stub.class%" public="true"/>
         <service id="openclassrooms.tests.util.authorization_checker_stub" class="%openclassrooms.tests.util.authorization_checker_stub.class%" public="true"/>
diff --git a/Tests/DependencyInjection/SecurityOpenClassroomsUseCaseExtensionTest.php b/Tests/DependencyInjection/SecurityOpenClassroomsUseCaseExtensionTest.php
index fd159a6..f911415 100644
--- a/Tests/DependencyInjection/SecurityOpenClassroomsUseCaseExtensionTest.php
+++ b/Tests/DependencyInjection/SecurityOpenClassroomsUseCaseExtensionTest.php
@@ -11,32 +11,6 @@
  */
 class SecurityOpenClassroomsUseCaseExtensionTest extends AbstractDependencyInjectionTestCase
 {
-    /**
-     * @test
-     */
-    public function WithSecurityConfigurationWithoutSecurityContext_SecurityUseCase_ThrowException()
-    {
-        $this->expectException(SecurityIsNotDefinedException::class);
-
-        $this->configLoader->load('SecurityConfiguration.php');
-        $this->container->compile();
-
-        $this->container->get('openclassrooms.tests.use_cases.configuration_security_use_case_stub');
-    }
-
-    /**
-     * @test
-     */
-    public function WithDefaultConfigurationWithoutSecurityContext_SecurityUseCase_ThrowException()
-    {
-        $this->expectException(SecurityIsNotDefinedException::class);
-
-        $this->configLoader->load('DefaultConfiguration.php');
-        $this->container->compile();
-
-        $this->container->get('openclassrooms.tests.use_cases.configuration_security_use_case_stub');
-    }
-
     /**
      * @test
      */