diff --git a/app/Listeners/NotificationEvents.php b/app/Listeners/NotificationEvents.php
index 74f72eff..342a42d0 100644
--- a/app/Listeners/NotificationEvents.php
+++ b/app/Listeners/NotificationEvents.php
@@ -18,12 +18,12 @@ class NotificationEvents
     {
         $events->listen(
             \App\Events\UserRegistered::class,
-            'App\Listeners\NotificationEventListener@onUserRegister'
+            'App\Listeners\NotificationEvents@onUserRegister'
         );
 
         $events->listen(
             \App\Events\UserStateChanged::class,
-            'App\Listeners\NotificationEventListener@onUserStateChange'
+            'App\Listeners\NotificationEvents@onUserStateChange'
         );
     }
 
diff --git a/app/Models/Traits/HashIdTrait.php b/app/Models/Traits/HashIdTrait.php
index 18b82a10..dafe7a81 100644
--- a/app/Models/Traits/HashIdTrait.php
+++ b/app/Models/Traits/HashIdTrait.php
@@ -1,5 +1,4 @@
 <?php
-
 namespace App\Models\Traits;
 
 use Hashids\Hashids;
@@ -10,7 +9,7 @@ trait HashIdTrait
      * @return string
      * @throws \Hashids\HashidsException
      */
-    protected static function createNewHashId()
+    protected static function createNewHashId(): string
     {
         $hashids = new Hashids('', 12);
         $mt = str_replace('.', '', microtime(true));
@@ -19,6 +18,7 @@ trait HashIdTrait
 
     /**
      * Register callbacks
+     * @throws \Hashids\HashidsException
      */
     protected static function bootHashIdTrait()
     {