diff --git a/js/api.js b/js/api.js
index 5fe407e..8fe0a35 100644
--- a/js/api.js
+++ b/js/api.js
@@ -1216,7 +1216,7 @@ export class LosslessAPI {
                             if ((await getExtensionFromBlob(blob)) != 'flac') {
                                 blob = await ffmpeg(
                                     blob,
-                                    { args: ['-c:a', 'flac'] },
+                                    { args: ['-c:a', 'copy'] },
                                     'output.flac',
                                     'audio/flac',
                                     onProgress,
diff --git a/js/downloads.js b/js/downloads.js
index 1d8d358..74d6d23 100644
--- a/js/downloads.js
+++ b/js/downloads.js
@@ -358,7 +358,7 @@ async function downloadTrackBlob(track, quality, api, lyricsManager = null, sign
                     if ((await getExtensionFromBlob(blob)) != 'flac') {
                         blob = await ffmpeg(
                             blob,
-                            { args: ['-c:a', 'flac'] },
+                            { args: ['-c:a', 'copy'] },
                             'output.flac',
                             'audio/flac',
                             () => undefined,