diff --git a/lib/Api/ContactsApi.php b/lib/Api/ContactsApi.php
index f1c9db2..7032be5 100644
--- a/lib/Api/ContactsApi.php
+++ b/lib/Api/ContactsApi.php
@@ -4107,6 +4107,7 @@ public function getContactsFromListWithHttpInfo($listId, $modifiedSince = null,
             if ($returnType === '\SplFileObject') {
                 $content = $responseBody; //stream goes to serializer
             } else {
+                $responseBody->rewind();
                 $content = $responseBody->getContents();
                 if ($returnType !== 'string') {
                     $content = json_decode($content);