diff --git a/app/lib/RoomClient.js b/app/lib/RoomClient.js
index ba2a927..9bf973c 100644
--- a/app/lib/RoomClient.js
+++ b/app/lib/RoomClient.js
@@ -581,8 +581,6 @@ export default class RoomClient
 
 			const track = stream.getAudioTracks()[0];
 
-			const oldTrack = this._micProducer.track;
-
 			const newTrack = await this._micProducer.replaceTrack(track);
 
 			const harkStream = new MediaStream;