diff --git a/src/Base/ConfigResolver.php b/src/Base/ConfigResolver.php
index 520dc49..5de8c61 100644
--- a/src/Base/ConfigResolver.php
+++ b/src/Base/ConfigResolver.php
@@ -38,6 +38,12 @@ final class ConfigResolver
 
         #[Autowire(param: 'auth.oidc.bypass_form_login')]
         private ?bool $authOidcBypassFormLogin = null,
+
+        #[Autowire(param: 'notification.transport')]
+        private ?string $notificationTransport = null,
+
+        #[Autowire(param: 'notification.ntfy.dsn')]
+        private ?string $notificationNtfyDsn = null,
     ) {}
 
     public function validate(): bool
@@ -54,6 +60,12 @@ final class ConfigResolver
             $valid = false;
         }
 
+        if (null !== $this->notificationTransport) {
+            if (null === $this->notificationNtfyDsn || "" === $this->notificationNtfyDsn) {
+                $this->messages[] = "Your NOTIFICATION_TRANSPORT is set to 'ntfy' but you don't have the NTFY_DSN environment variable set.";
+            }
+        }
+
         return $valid;
     }