diff --git a/app/controllers/attachments_controller.rb b/app/controllers/attachments_controller.rb
index 200ad55e3..6db403265 100644
--- a/app/controllers/attachments_controller.rb
+++ b/app/controllers/attachments_controller.rb
@@ -42,8 +42,9 @@ class AttachmentsController < ApplicationController
       domain  = GiteaService.gitea_config[:domain]
       api_url = GiteaService.gitea_config[:base_url]
       url = ("/repos"+url.split(base_url + "/api")[1])
-      filepath, ref = url.split("/")[-1].split("?")
-      url.gsub!(url.split("/")[-1], '')
+      ref = url.split("?")[1]
+      filepath = url.split("?")[0].split("/")[-1]
+      url.gsub!(filepath+"?"+ref, '')
       # Rails.logger.info("url===#{url}")
       Rails.logger.info(filepath)
       ref = ref.blank? ? "" : URI.escape(ref.split('ref=')[1])