diff --git a/configure.ac b/configure.ac
index f797464..c1be3e0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -120,7 +120,6 @@ fi
 AM_CONDITIONAL(XSERVER_LIBPCIACCESS, test "x$XSERVER_LIBPCIACCESS" = xyes)
 
 AC_SUBST([DRI_CFLAGS])
-AC_SUBST([XORG_CFLAGS])
 AC_SUBST([moduledir])
 AC_DEFINE_UNQUOTED(XGI_RELEASE_DATE, ["$RELEASE_DATE"], [Driver release])
 DRIVER_NAME=xgi