diff --git a/audio/source.go b/audio/source.go
index 273e1ca..37a35ea 100644
--- a/audio/source.go
+++ b/audio/source.go
@@ -11,7 +11,6 @@ type SourceFormat int
 const (
 	SourceFloat32 = SourceFormat(iota)
 	SourceInt16
-	SourceInt24
 	SourceInt32
 )