diff --git a/sandbox/server.js b/sandbox/server.js
index 28dbe64..9c92a2a 100644
--- a/sandbox/server.js
+++ b/sandbox/server.js
@@ -30,8 +30,8 @@ server = http.createServer(function (req, res) {
     pipeFileToResponse(res, './client.html');
   } else if (pathname === '/axios.js') {
     pipeFileToResponse(res, '../dist/axios.js', 'text/javascript');
-  } else if (pathname === '/axios.map') {
-    pipeFileToResponse(res, '../dist/axios.map', 'text/javascript');
+  } else if (pathname === '/axios.js.map') {
+    pipeFileToResponse(res, '../dist/axios.js.map', 'text/javascript');
   } else if (pathname === '/api') {
     let status;
     let result;