diff --git a/extend/base/common/tools/PathToolsBase.php b/extend/base/common/tools/PathToolsBase.php
index 4c9f004..dfb1cc5 100644
--- a/extend/base/common/tools/PathToolsBase.php
+++ b/extend/base/common/tools/PathToolsBase.php
@@ -26,7 +26,7 @@ class PathToolsBase
 
     public static function publicBuildSaveName($file_name)
     {
-        return '/build/' . $file_name;
+        return '/build/' . ltrim($file_name, '/');
     }
 
     public static function safeBuildPath($save_name)