diff --git a/library.c b/library.c
index b8c316ab..415c3b9a 100644
--- a/library.c
+++ b/library.c
@@ -147,7 +147,7 @@ const struct vpn_proto openconnect_protos[] = {
 		.name = "gp",
 		.pretty_name = N_("Palo Alto Networks GlobalProtect"),
 		.description = N_("Compatible with Palo Alto Networks (PAN) GlobalProtect SSL VPN"),
-		.flags = OC_PROTO_PROXY | OC_PROTO_AUTH_CERT | OC_PROTO_AUTH_OTP | OC_PROTO_AUTH_STOKEN,
+		.flags = OC_PROTO_PROXY | OC_PROTO_CSD | OC_PROTO_AUTH_CERT | OC_PROTO_AUTH_OTP | OC_PROTO_AUTH_STOKEN,
 		.vpn_close_session = gpst_bye,
 		.tcp_connect = gpst_setup,
 		.tcp_mainloop = gpst_mainloop,