diff --git a/src/Api/Operator/Ui.php b/src/Api/Operator/Ui.php
index c93dc3ce..fb56b001 100644
--- a/src/Api/Operator/Ui.php
+++ b/src/Api/Operator/Ui.php
@@ -12,7 +12,7 @@ public function getNavigation(): array
         $response = $this->request('get-navigation');
 
         /** @psalm-suppress ImplicitToStringCast, PossiblyNullArgument */
-        return unserialize(base64_decode($response->navigation));
+        return unserialize(base64_decode($response->navigation), ['allowed_classes' => false]);
     }
 
     public function createCustomButton(string $owner, array $properties): int