diff --git a/lib/Server.js b/lib/Server.js
index a403f4bbac..809b214f24 100644
--- a/lib/Server.js
+++ b/lib/Server.js
@@ -919,14 +919,9 @@ class Server {
         return next();
       }
       // Serve a page that executes the javascript
-      res.write(
-        '<!DOCTYPE html><html><head><meta charset="utf-8"/></head><body><script type="text/javascript" charset="utf-8" src="'
-      );
-      res.write(_path);
-      res.write('.js');
-      res.write(req._parsedUrl.search || '');
-
-      res.end('"></script></body></html>');
+      const queries = req._parsedUrl.search || '';
+      const responsePage = `<!DOCTYPE html><html><head><meta charset="utf-8"/></head><body><script type="text/javascript" charset="utf-8" src="${_path}.js${queries}"></script></body></html>`;
+      res.send(responsePage);
     } catch (err) {
       return next();
     }
