diff --git a/conf/var.go b/conf/var.go
index 3f3490e95ab..b67f1b0685b 100644
--- a/conf/var.go
+++ b/conf/var.go
@@ -37,7 +37,7 @@ var (
 	DProxyTypes = []string{"m3u8"}
 	OfficeTypes = []string{"doc", "docx", "xls", "xlsx", "ppt", "pptx", "pdf"}
 	VideoTypes  = []string{"mp4", "mkv", "avi", "mov", "rmvb", "webm", "flv"}
-	AudioTypes  = []string{"mp3", "flac", "ogg", "m4a", "wav"}
+	AudioTypes  = []string{"mp3", "flac", "ogg", "m4a", "wav", "opus"}
 	ImageTypes  = []string{"jpg", "tiff", "jpeg", "png", "gif", "bmp", "svg", "ico", "swf", "webp"}
 )