diff --git a/x11-base/xorg-server/xorg-server-9999.ebuild b/x11-base/xorg-server/xorg-server-9999.ebuild
index abe819a..d67459b 100644
--- a/x11-base/xorg-server/xorg-server-9999.ebuild
+++ b/x11-base/xorg-server/xorg-server-9999.ebuild
@@ -11,7 +11,7 @@ OPENGL_DIR="xorg-x11"
 
 DESCRIPTION="X.Org X servers"
 KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~sh ~sparc ~x86 ~x86-fbsd"
-
+export TOP_SRCDIR=${S}
 IUSE_SERVERS="dmx kdrive xorg"
 IUSE="${IUSE_SERVERS} doc ipv6 minimal nptl tslib +udev"
 RDEPEND=">=app-admin/eselect-opengl-1.0.8