diff --git a/src/index.js b/src/index.js
index 7c0bb33..5981423 100644
--- a/src/index.js
+++ b/src/index.js
@@ -97,7 +97,7 @@ async function playbackinfopostpaywall(env, type, id, q) {
         return error(403, 'Couldn\'t get manifest')
     }
 
-    if (!('application/vnd.tidal.bts', 'application/vnd.tidal.emu').includes(res.json.manifestMimeType)) {
+    if (!['application/vnd.tidal.bts', 'application/vnd.tidal.emu'].includes(res.json.manifestMimeType)) {
         return error(500, 'Invalid manifest mime type')
     }