diff --git a/atom b/atom
index 40ee62a..9df6c32 100755
--- a/atom
+++ b/atom
@@ -1286,7 +1286,7 @@ encodeFile::opus() {
 			cleanup		$tempdir/$tmpfile.wav
 			source_file	$fileid
 			status		0
-			rename_pattern	"${destinationrenamepath[$destination]}/${destinationrename[$destination]}"
+			rename_pattern	${destinationrenamepath[$destination]}/${destinationrename[$destination]}:${destinationfat32compat["$destination"]}
 		EOInsert
 	)
 	progressSpin
@@ -2239,6 +2239,7 @@ do
 	then
 		case "${destinationformat[$destination]}" in
 			'mp3') extension=mp3 ;;
+			'opus') extension=opus ;;
 			'vorbis') extension=ogg ;;
 		esac
 		echo -n "$destination: rename pattern changed, renaming files...  "