diff --git a/src/QiniuAdapter.php b/src/QiniuAdapter.php
index 25500467..6c98b47a 100755
--- a/src/QiniuAdapter.php
+++ b/src/QiniuAdapter.php
@@ -336,7 +336,7 @@ public function delete($path)
     {
         $bucketMgr = $this->getBucketManager();
 
-        $error = $bucketMgr->delete($this->bucket, $path);
+        list($ret, $error) = $bucketMgr->delete($this->bucket, $path);
         if ($error !== null) {
             $this->logQiniuError($error, $this->bucket . '/' . $path);