diff --git a/src/QimenWms.php b/src/QimenWms.php
index 5ba935a..bc799d9 100644
--- a/src/QimenWms.php
+++ b/src/QimenWms.php
@@ -611,15 +611,8 @@ class QimenWms extends BaseWms implements WmsInterface
         if (empty($params)) {
             return false;
         }
-        $query = [
-            'method' => $params['method'],
-            'timestamp' => $params['timestamp'],
-            'format' => $params['format'],
-            'app_key' => $params['app_key'],
-            'v' => $params['v'],
-            'sign_method' => $params['sign_method'],
-            'customerId' => $params['customerId'],
-        ];
+        $query = $params;
+        unset($query['body'], $query['sign']);
         $sign = $this->createSign($query, $params['body']);
         if (!hash_equals((string) $sign, (string) $params['sign'])) {
             return false;