diff --git a/res/res_calendar_icalendar.c b/res/res_calendar_icalendar.c
index cab8cf628a..29be671d35 100644
--- a/res/res_calendar_icalendar.c
+++ b/res/res_calendar_icalendar.c
@@ -465,6 +465,7 @@ static void *ical_load_calendar(void *void_data)
 	pvt->session = ne_session_create(pvt->uri.scheme, pvt->uri.host, pvt->uri.port);
 	ne_redirect_register(pvt->session);
 	ne_set_server_auth(pvt->session, auth_credentials, pvt);
+	ne_set_useragent(pvt->session, "Asterisk");
 	if (!strcasecmp(pvt->uri.scheme, "https")) {
 		ne_ssl_trust_default_ca(pvt->session);
 	}