diff --git a/openvpn/tun/client/tunprop.hpp b/openvpn/tun/client/tunprop.hpp
index d9f20f85445b..3e7ab8eab54b 100644
--- a/openvpn/tun/client/tunprop.hpp
+++ b/openvpn/tun/client/tunprop.hpp
@@ -523,7 +523,7 @@ namespace openvpn {
        throw tun_prop_dhcp_option_error("tun_builder_add_dns_server
failed");
      flags |= F_ADD_DNS;
    }
- else if (type == "DOMAIN")
+ else if (type == "DOMAIN" || type == "DOMAIN-SEARCH")
    {
      o.min_args(3);