diff --git a/audio/Makefile b/audio/Makefile
index 033f2677c42..b253a26c3c5 100644
--- a/audio/Makefile
+++ b/audio/Makefile
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.151 2006/08/05 21:23:48 david Exp $
+# $OpenBSD: Makefile,v 1.152 2006/09/25 18:57:36 grange Exp $
 # $FreeBSD: Makefile,v 1.40 1997/11/16 22:49:20 fenner Exp $
 
      SUBDIR += abcde
@@ -28,6 +28,7 @@
      SUBDIR += grip
      SUBDIR += gsm
      SUBDIR += gtkpod
+     SUBDIR += hydrogen
      SUBDIR += id3ed
      SUBDIR += id3lib
      SUBDIR += ifp-line