diff --git a/src/QiniuAdapter.php b/src/QiniuAdapter.php
index 890537e..e1bc289 100644
--- a/src/QiniuAdapter.php
+++ b/src/QiniuAdapter.php
@@ -90,7 +90,7 @@ public function read(string $path): string
 
     public function readStream(string $path): string
     {
-        if (ini_get('allow_url_open')) {
+        if (ini_get('allow_url_fopen')) {
             if ($result = fopen($this->privateDownloadUrl($path), 'r')) {
                 return $result;
             }