diff --git a/src/add-ons/media/media-add-ons/opensound/makefile b/src/add-ons/media/media-add-ons/opensound/makefile
index 5290ac4f33..a6bef44105 100644
--- a/src/add-ons/media/media-add-ons/opensound/makefile
+++ b/src/add-ons/media/media-add-ons/opensound/makefile
@@ -73,7 +73,7 @@ LIBPATHS :=
 #	additional paths to look for system headers
 #	thes use the form: #include <header>
 #	source file directories are NOT auto-included here
-SYSTEM_INCLUDE_PATHS := ../../include
+SYSTEM_INCLUDE_PATHS := ../../include ../../../../../headers/private/media
 
 #	additional paths to look for local headers
 #	thes use the form: #include "header"