diff --git a/src/QueryBuilder/AbstractDMLQueryBuilder.php b/src/QueryBuilder/AbstractDMLQueryBuilder.php
index e7af38e74..6a1a290c1 100644
--- a/src/QueryBuilder/AbstractDMLQueryBuilder.php
+++ b/src/QueryBuilder/AbstractDMLQueryBuilder.php
@@ -147,11 +147,11 @@ protected function prepareTraversable(Traversable $rows): Iterator|array
             $rows = $rows->getIterator();
         }
 
-        if ($rows instanceof Iterator && !$rows->valid()) {
+        /** @var Iterator $rows */
+        if (!$rows->valid()) {
             return [];
         }
 
-        /** @var Iterator $rows */
         return $rows;
     }