diff --git a/index.js b/index.js
index 188d77d..144fd60 100644
--- a/index.js
+++ b/index.js
@@ -43,9 +43,9 @@ var gamePath = path.join(__dirname, "games")
 // var imgPath = path.join(staticpath, 'imgs')
 
 app.use(function (req, res, next) {
-    res.header("Cross-Origin-Embedder-Policy", "require-corp");
-    res.header("Cross-Origin-Opener-Policy", "same-origin");
-    next();
+    res.setHeader("Cross-Origin-Embedder-Policy", "require-corp")
+    res.setHeader("Cross-Origin-Opener-Policy", "same-origin")
+    next()
 });