diff --git a/Admin/Activate.php b/Admin/Activate.php
index 7ba7680..a721df1 100644
--- a/Admin/Activate.php
+++ b/Admin/Activate.php
@@ -13,9 +13,9 @@
  * @version    1.0.0
  * @link       http://orange-management.com
  */
+declare(strict_types=1);
 namespace Modules\Messages\Admin;
 
-
 use phpOMS\DataStorage\Database\DatabasePool;
 use phpOMS\Module\ActivateAbstract;
 use phpOMS\Module\InfoManager;
diff --git a/Admin/Deactivate.php b/Admin/Deactivate.php
index 0781995..d100b21 100644
--- a/Admin/Deactivate.php
+++ b/Admin/Deactivate.php
@@ -13,9 +13,9 @@
  * @version    1.0.0
  * @link       http://orange-management.com
  */
+declare(strict_types=1);
 namespace Modules\Messages\Admin;
 
-
 use phpOMS\DataStorage\Database\DatabasePool;
 use phpOMS\Module\DeactivateAbstract;
 use phpOMS\Module\InfoManager;
diff --git a/Admin/Install/Navigation.php b/Admin/Install/Navigation.php
index f19993a..192a0f2 100644
--- a/Admin/Install/Navigation.php
+++ b/Admin/Install/Navigation.php
@@ -13,6 +13,7 @@
  * @version    1.0.0
  * @link       http://orange-management.com
  */
+declare(strict_types=1);
 namespace Modules\Messages\Admin\Install;
 use phpOMS\DataStorage\Database\DatabasePool;
 
diff --git a/Admin/Installer.php b/Admin/Installer.php
index efe88d7..5794f93 100644
--- a/Admin/Installer.php
+++ b/Admin/Installer.php
@@ -13,6 +13,7 @@
  * @version    1.0.0
  * @link       http://orange-management.com
  */
+declare(strict_types=1);
 namespace Modules\Messages\Admin;
 
 use phpOMS\DataStorage\Database\DatabaseType;
diff --git a/Admin/Uninstall.php b/Admin/Uninstall.php
index d8461d5..5ae2d43 100644
--- a/Admin/Uninstall.php
+++ b/Admin/Uninstall.php
@@ -13,9 +13,9 @@
  * @version    1.0.0
  * @link       http://orange-management.com
  */
+declare(strict_types=1);
 namespace Modules\Messages\Admin;
 
-
 use phpOMS\DataStorage\Database\DatabasePool;
 use phpOMS\DataStorage\Database\Schema\Builder;
 use phpOMS\Module\UninstallAbstract;
diff --git a/Admin/Update.php b/Admin/Update.php
index c93aef0..60241dc 100644
--- a/Admin/Update.php
+++ b/Admin/Update.php
@@ -13,9 +13,9 @@
  * @version    1.0.0
  * @link       http://orange-management.com
  */
+declare(strict_types=1);
 namespace Modules\Messages\Admin;
 
-
 use phpOMS\DataStorage\Database\DatabasePool;
 use phpOMS\Module\UpdateAbstract;
 use phpOMS\System\File\Directory;
diff --git a/Controller.php b/Controller.php
index de2a4e7..7855d38 100644
--- a/Controller.php
+++ b/Controller.php
@@ -13,6 +13,7 @@
  * @version    1.0.0
  * @link       http://orange-management.com
  */
+declare(strict_types=1);
 namespace Modules\Messages;
 
 use Modules\Navigation\Models\Navigation;
diff --git a/Models/Email.php b/Models/Email.php
index a505aaa..bde29cb 100644
--- a/Models/Email.php
+++ b/Models/Email.php
@@ -13,6 +13,7 @@
  * @version    1.0.0
  * @link       http://orange-management.com
  */
+declare(strict_types=1);
 namespace Modules\Messages;
 
 /**
diff --git a/Models/IMAP.php b/Models/IMAP.php
index 4dbad17..375885d 100644
--- a/Models/IMAP.php
+++ b/Models/IMAP.php
@@ -13,6 +13,7 @@
  * @version    1.0.0
  * @link       http://orange-management.com
  */
+declare(strict_types=1);
 namespace Modules\Messages;
 
 use Modules\Messages\Email;