diff --git a/app/Providers/AuthServiceProvider.php b/app/Providers/AuthServiceProvider.php
index 4a8b3b14..3b9be3ca 100644
--- a/app/Providers/AuthServiceProvider.php
+++ b/app/Providers/AuthServiceProvider.php
@@ -66,7 +66,7 @@ class AuthServiceProvider extends ServiceProvider
 
         Auth::viaRequest('passkey', function (Request $request) {
             $passkey = $request->passkey;
-            if (empty($passkey)) {
+            if (strlen($passkey) != 32) {
                 return null;
             }
             return User::query()->where('passkey', $passkey)->first();