diff --git a/src/Command/ElFinderInstallerCommand.php b/src/Command/ElFinderInstallerCommand.php
index 9369f64..94647e9 100644
--- a/src/Command/ElFinderInstallerCommand.php
+++ b/src/Command/ElFinderInstallerCommand.php
@@ -1,7 +1,5 @@
 <?php
 
-declare(strict_types=1);
-
 namespace FM\ElfinderBundle\Command;
 
 use Symfony\Component\Console\Command\Command;
diff --git a/src/Configuration/ElFinderConfigurationProviderInterface.php b/src/Configuration/ElFinderConfigurationProviderInterface.php
index 321719c..85ba188 100644
--- a/src/Configuration/ElFinderConfigurationProviderInterface.php
+++ b/src/Configuration/ElFinderConfigurationProviderInterface.php
@@ -1,7 +1,5 @@
 <?php
 
-declare(strict_types=1);
-
 namespace FM\ElfinderBundle\Configuration;
 
 /**
diff --git a/src/Controller/ElFinderController.php b/src/Controller/ElFinderController.php
index f6f42c4..ae95496 100644
--- a/src/Controller/ElFinderController.php
+++ b/src/Controller/ElFinderController.php
@@ -1,7 +1,5 @@
 <?php
 
-declare(strict_types=1);
-
 namespace FM\ElfinderBundle\Controller;
 
 use Exception;
diff --git a/src/Event/ElFinderPostExecutionEvent.php b/src/Event/ElFinderPostExecutionEvent.php
index af699a6..60e6e24 100644
--- a/src/Event/ElFinderPostExecutionEvent.php
+++ b/src/Event/ElFinderPostExecutionEvent.php
@@ -20,7 +20,7 @@ class ElFinderPostExecutionEvent extends ElFinderPreExecutionEvent
      * @param string $instance
      * @param string $homeFolder
      */
-    public function __construct(Request $request, HttpKernelInterface $httpKernel, $instance, $homeFolder, array $result)
+    public function __construct(Request $request, HttpKernelInterface $httpKernel, $instance, $homeFolder, array $result = null)
     {
         parent::__construct($request, $httpKernel, $instance, $homeFolder);