diff --git a/app.js b/app.js
index 1faca04..49b06f8 100644
--- a/app.js
+++ b/app.js
@@ -91,7 +91,6 @@ worker = createWorker();
 // list of media codecs supported by mediasoup ...
 // https://github.com/versatica/mediasoup/blob/v3/src/supportedRtpCapabilities.ts
 const mediaCodecs = 			[
-  channels  : 2,
   {
     kind      : 'audio',
     mimeType  : 'audio/opus',