diff --git a/src/mod/endpoints/mod_sofia/sofia.c b/src/mod/endpoints/mod_sofia/sofia.c
index a370b52442..77e4750812 100644
--- a/src/mod/endpoints/mod_sofia/sofia.c
+++ b/src/mod/endpoints/mod_sofia/sofia.c
@@ -10476,7 +10476,7 @@ void sofia_handle_sip_i_invite(switch_core_session_t *session, nua_t *nua, sofia
 		(!is_tcp && !is_tls && (zstr(network_ip) || !switch_check_network_list_ip(network_ip, profile->local_network)) &&
 		 profile->server_rport_level >= 2 && sip->sip_user_agent &&
 		 sip->sip_user_agent->g_string &&
-		 (!strncasecmp(sip->sip_user_agent->g_string, "Polycom", 7) || !strncasecmp(sip->sip_user_agent->g_string, "KIRK Wireless Server", 20)))
+		 (!strncasecmp(sip->sip_user_agent->g_string, "Poly", 4) || !strncasecmp(sip->sip_user_agent->g_string, "KIRK Wireless Server", 20)))
 		) {
 		if (sip->sip_via) {
 			const char *port = sip->sip_via->v_port;