diff --git a/audio/format/mp3/mp3_lame.go b/audio/format/mp3/mp3_lame.go
index 1cadcd7..16f0341 100644
--- a/audio/format/mp3/mp3_lame.go
+++ b/audio/format/mp3/mp3_lame.go
@@ -49,22 +49,22 @@ func (f Format) Encode(source audio.Source, writer io.WriteCloser, options map[s
 					bitrate = 3
 				case "v4":
 					vbr = true
-					bitrate = 3
+					bitrate = 4
 				case "v5":
 					vbr = true
-					bitrate = 3
+					bitrate = 5
 				case "v6":
 					vbr = true
-					bitrate = 3
+					bitrate = 6
 				case "v7":
 					vbr = true
-					bitrate = 3
+					bitrate = 7
 				case "v8":
 					vbr = true
-					bitrate = 3
+					bitrate = 8
 				case "v9":
 					vbr = true
-					bitrate = 3
+					bitrate = 9
 				case "320k":
 					vbr = false
 					bitrate = 320