diff --git a/auth-handler.go b/auth-handler.go
index 90d1b3a..32b2871 100644
--- a/auth-handler.go
+++ b/auth-handler.go
@@ -49,6 +49,8 @@ func writeIndexPage(w http.ResponseWriter, req *http.Request) {
 	if page == nil {
 		page = domainToLoginPage[""]
 	}
+	w.Header().Add("WWW-Authenticate", "Bearer realm=\"JAuth\"")
+	w.WriteHeader(http.StatusUnauthorized)
 	w.Write(page)
 }