diff --git a/app/Notifications/CheckinLicenseSeatNotification.php b/app/Notifications/CheckinLicenseSeatNotification.php
index 114011bd72..74018af7c9 100644
--- a/app/Notifications/CheckinLicenseSeatNotification.php
+++ b/app/Notifications/CheckinLicenseSeatNotification.php
@@ -6,6 +6,7 @@ use App\Models\LicenseSeat;
 use App\Models\Setting;
 use App\Models\User;
 use Illuminate\Bus\Queueable;
+use Illuminate\Notifications\Channels\SlackWebhookChannel;
 use Illuminate\Notifications\Messages\MailMessage;
 use Illuminate\Notifications\Messages\SlackMessage;
 use Illuminate\Notifications\Notification;
@@ -58,7 +59,7 @@ class CheckinLicenseSeatNotification extends Notification
         }
 
         if (Setting::getSettings()->webhook_selected == 'slack' || Setting::getSettings()->webhook_selected == 'general' ) {
-            $notifyBy[] = 'slack';
+            $notifyBy[] = SlackWebhookChannel::class;
         }
 
         return $notifyBy;
diff --git a/tests/Feature/Checkouts/Ui/AccessoryCheckoutTest.php b/tests/Feature/Checkouts/Ui/AccessoryCheckoutTest.php
index 980b390ad7..af9b286725 100644
--- a/tests/Feature/Checkouts/Ui/AccessoryCheckoutTest.php
+++ b/tests/Feature/Checkouts/Ui/AccessoryCheckoutTest.php
@@ -170,7 +170,7 @@ class AccessoryCheckoutTest extends TestCase
                 'checkout_to_type' => 'user',
             ]);
 
-        Mail::assertNotSent(CheckoutAccessoryMail::class, function ($mail) use ($user) {
+        Mail::assertSent(CheckoutAccessoryMail::class, function ($mail) use ($user) {
             return $mail->hasTo($user->email);
         });
     }
diff --git a/tests/Support/AssertsAgainstSlackNotifications.php b/tests/Support/AssertsAgainstSlackNotifications.php
index 11e6beea2d..e52f39a7e5 100644
--- a/tests/Support/AssertsAgainstSlackNotifications.php
+++ b/tests/Support/AssertsAgainstSlackNotifications.php
@@ -14,6 +14,7 @@ trait AssertsAgainstSlackNotifications
             new AnonymousNotifiable,
             $notificationClass,
             function ($notification, $channels, $notifiable) {
+                dd($notification);
                 return $notifiable->routes['slack'] === Setting::getSettings()->webhook_endpoint;
             }
         );