diff --git a/src/Listeners/SendTwoFactorCodeListener.php b/src/Listeners/SendTwoFactorCodeListener.php
index f63e0d7..118bdb2 100644
--- a/src/Listeners/SendTwoFactorCodeListener.php
+++ b/src/Listeners/SendTwoFactorCodeListener.php
@@ -23,6 +23,6 @@ public function handle(TwoFactorAuthenticationChallenged | TwoFactorAuthenticati
     {
         /** @var mixed $user */
         $user = $event->user;
-        $user->notify(app(config('send_otp_class', SendOTP::class)));
+        $user->notify(app(config('filament-two-factor-auth.send_otp_class', SendOTP::class)));
     }
 }