diff --git a/library/think/File.php b/library/think/File.php
index 6994d534..89c7b248 100644
--- a/library/think/File.php
+++ b/library/think/File.php
@@ -81,7 +81,7 @@ class File extends SplFileObject
             return false;
         }
 
-        return new SplFileInfo($path . $savename);
+        return new \SplFileInfo($path . $savename);
     }
 
     /**