diff --git a/Admin/Routes/Web/Api.php b/Admin/Routes/Web/Api.php
index 0dcf6d1..eb1c4b7 100644
--- a/Admin/Routes/Web/Api.php
+++ b/Admin/Routes/Web/Api.php
@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 
 use Modules\Profile\Controller\ApiController;
 use Modules\Profile\Models\PermissionState;
@@ -17,4 +17,4 @@ return [
             ],
         ],
     ],
-];
\ No newline at end of file
+];
diff --git a/Admin/Routes/Web/Backend.php b/Admin/Routes/Web/Backend.php
index ff50f38..ffbdf8a 100644
--- a/Admin/Routes/Web/Backend.php
+++ b/Admin/Routes/Web/Backend.php
@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 
 use Modules\Profile\Controller\BackendController;
 use Modules\Profile\Models\PermissionState;
diff --git a/Models/Profile.php b/Models/Profile.php
index df35f46..7bdef49 100644
--- a/Models/Profile.php
+++ b/Models/Profile.php
@@ -207,7 +207,7 @@ class Profile implements \JsonSerializable
     public function jsonSerialize()
     {
         return [
-            'id' => $this->id
+            'id' => $this->id,
         ];
     }
 }
diff --git a/Theme/Backend/Lang/Navigation.en.lang.php b/Theme/Backend/Lang/Navigation.en.lang.php
index 1758aaa..de79680 100644
--- a/Theme/Backend/Lang/Navigation.en.lang.php
+++ b/Theme/Backend/Lang/Navigation.en.lang.php
@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 /**
  * Orange Management
  *
diff --git a/Theme/Backend/Lang/api.en.lang.php b/Theme/Backend/Lang/api.en.lang.php
index 12ac5fd..52a9f4b 100644
--- a/Theme/Backend/Lang/api.en.lang.php
+++ b/Theme/Backend/Lang/api.en.lang.php
@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 /**
  * Orange Management
  *
diff --git a/Theme/Backend/Lang/en.lang.php b/Theme/Backend/Lang/en.lang.php
index 65d4efb..ed816a4 100644
--- a/Theme/Backend/Lang/en.lang.php
+++ b/Theme/Backend/Lang/en.lang.php
@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 /**
  * Orange Management
  *
diff --git a/Theme/Backend/modules-create.tpl.php b/Theme/Backend/modules-create.tpl.php
index 9faca55..f452947 100644
--- a/Theme/Backend/modules-create.tpl.php
+++ b/Theme/Backend/modules-create.tpl.php
@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 
 echo $this->getData('nav')->render();
 ?>
diff --git a/Theme/Backend/modules-settings.tpl.php b/Theme/Backend/modules-settings.tpl.php
index d0dd006..2875300 100644
--- a/Theme/Backend/modules-settings.tpl.php
+++ b/Theme/Backend/modules-settings.tpl.php
@@ -1,4 +1,3 @@
-<?php
+<?php declare(strict_types=1);
 
 echo $this->getData('nav')->render();
-?>
\ No newline at end of file
diff --git a/Theme/Backend/profile-list.tpl.php b/Theme/Backend/profile-list.tpl.php
index 0fd9c70..8184b90 100644
--- a/Theme/Backend/profile-list.tpl.php
+++ b/Theme/Backend/profile-list.tpl.php
@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 /**
  * Orange Management
  *
diff --git a/Theme/Backend/profile-single.tpl.php b/Theme/Backend/profile-single.tpl.php
index 8c2d493..abf8213 100644
--- a/Theme/Backend/profile-single.tpl.php
+++ b/Theme/Backend/profile-single.tpl.php
@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 /**
  * Orange Management
  *