diff --git a/x11-base/xorg-server/xorg-server-9999.ebuild b/x11-base/xorg-server/xorg-server-9999.ebuild
index c2ef02a..86ab093 100644
--- a/x11-base/xorg-server/xorg-server-9999.ebuild
+++ b/x11-base/xorg-server/xorg-server-9999.ebuild
@@ -189,6 +189,7 @@ src_configure() {
 }
 
 src_compile() {
+	export TOP_SRCDIR=${S}
 	emake # no die here intentional
 	if [[ $? != 0 ]]; then
 		[[ ${OLD_IMPLEM} != ${OPENGL_DIR} ]] && eselect opengl set ${OLD_IMPLEM}