diff --git a/api/src/processing/match-action.js b/api/src/processing/match-action.js
index 5820214e..262b3acf 100644
--- a/api/src/processing/match-action.js
+++ b/api/src/processing/match-action.js
@@ -98,7 +98,7 @@ export default function({ r, host, audioFormat, isAudioOnly, isAudioMuted, disab
                             type: audioStreamType,
                             url: r.urls,
                             headers: r.headers,
-                            filename: r.audioFilename,
+                            filename: `${r.audioFilename}.${audioFormat}`,
                             isAudioOnly: true,
                             audioFormat,
                         })