Index: include/Makefile.in
--- include/Makefile.in.orig
+++ include/Makefile.in
@@ -346,7 +346,7 @@ host_cpu = @host_cpu@
 host_os = @host_os@
 host_vendor = @host_vendor@
 htmldir = @htmldir@
-includedir = @includedir@
+includedir = @includedir@/openvpn
 infodir = @infodir@
 install_sh = @install_sh@
 libdir = @libdir@