diff --git a/zefie_wtvp_minisrv/ServiceVault/wtv-1800/noflash.js b/zefie_wtvp_minisrv/ServiceVault/wtv-1800/noflash.js
index 79ba73c1..87a0ede3 100644
--- a/zefie_wtvp_minisrv/ServiceVault/wtv-1800/noflash.js
+++ b/zefie_wtvp_minisrv/ServiceVault/wtv-1800/noflash.js
@@ -3,7 +3,7 @@ var minisrv_service_file = true;
 if (socket.ssid != null && !ssid_sessions[socket.ssid].get("wtvsec_login")) {
 	var wtvsec_login = new WTVSec(minisrv_config);
 	wtvsec_login.IssueChallenge();
-	wtvsec_login.set_incarnation(request_headers["wtv-incarnation"]);
+	if (request_headers["wtv-incarnation"]) wtvsec_login.set_incarnation(request_headers["wtv-incarnation"]);
 	ssid_sessions[socket.ssid].set("wtvsec_login", wtvsec_login);
 } else if (socket.ssid != null) {
 	var wtvsec_login = ssid_sessions[socket.ssid].get("wtvsec_login");