diff --git a/app/Classes/Modules/Accounts/DataTransferObjects/UserInvitationObject.php b/app/Classes/Modules/Accounts/DataTransferObjects/UserInvitationObject.php
index e8c8041..20d5a9e 100644
--- a/app/Classes/Modules/Accounts/DataTransferObjects/UserInvitationObject.php
+++ b/app/Classes/Modules/Accounts/DataTransferObjects/UserInvitationObject.php
@@ -22,6 +22,7 @@ class UserInvitationObject
      * @param int $role
      * @param string $inviteeEmail
      * @param null|string $hash
+     * @throws \Exception
      */
     public function __construct(int $role, string $inviteeEmail, ?string $hash = null)
     {
diff --git a/app/Classes/Modules/ControllersLogic/Accounts/CreateAccountInvitationLogic.php b/app/Classes/Modules/ControllersLogic/Accounts/CreateAccountInvitationLogic.php
index 5b6e723..928d502 100644
--- a/app/Classes/Modules/ControllersLogic/Accounts/CreateAccountInvitationLogic.php
+++ b/app/Classes/Modules/ControllersLogic/Accounts/CreateAccountInvitationLogic.php
@@ -2,7 +2,6 @@
 
 namespace App\Classes\Modules\ControllersLogic\Accounts;
 
-
 use App\Classes\Modules\Accounts\DataTransferObjects\UserInvitationObject;
 use App\Classes\Modules\Accounts\Services\CreatesUserInvitation;
 use App\Classes\Modules\Accounts\Validation\CanSendAccountInvitation;
@@ -42,7 +41,6 @@ class CreateAccountInvitationLogic
     public function execute(Request $request) {
 
         try {
-
             $object = new UserInvitationObject($request->get('role_id'), $request->get('email'));
 
             if($this->canSendAccountInvitation->execute($object)){
diff --git a/app/Classes/common.php b/app/Classes/common.php
index 684e9fa..8eafa46 100644
--- a/app/Classes/common.php
+++ b/app/Classes/common.php
@@ -9,8 +9,9 @@ final class common
     /**
      * @param int $length
      * @return string
+     * @throws \Exception
      */
     public static function generateRandomHash(int $length = 10): string {
-        return substr(bin2hex(ceil($length / 2)), 0, $length);
+        return substr(bin2hex(random_bytes(ceil($length / 2))), 0, $length);
     }
 }
\ No newline at end of file