diff --git a/services/transcode/preview.go b/services/transcode/preview.go
index 3db07257..c0d304ec 100644
--- a/services/transcode/preview.go
+++ b/services/transcode/preview.go
@@ -65,8 +65,7 @@ func AudioPreview(input PreviewInput, progressCallback ffmpeg.ProgressCallback)
 
 				fileMap[l.ISO6391] = fileName
 			}
-		}
-		if isMU2 {
+		} else if isMU2 {
 			for i, l := range bccmflows.LanguagesByMU2 {
 				fileName := filepath.Join(input.OutputDir, fmt.Sprintf("%d.%s.aac", i, l.ISO6391))