diff --git a/src/mod/endpoints/mod_sofia/sofia_reg.c b/src/mod/endpoints/mod_sofia/sofia_reg.c
index d9e04528a8..ccd42bf6ab 100644
--- a/src/mod/endpoints/mod_sofia/sofia_reg.c
+++ b/src/mod/endpoints/mod_sofia/sofia_reg.c
@@ -1661,7 +1661,7 @@ uint8_t sofia_reg_handle_register_token(nua_t *nua, sofia_profile_t *profile, nu
 			if (!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, "Poly", 4) ||
 				  !strncasecmp(sip->sip_user_agent->g_string, "KIRK Wireless Server", 20) ||
 				  !strncasecmp(sip->sip_user_agent->g_string, "ADTRAN_Total_Access", 19) )) {
 				if (sip->sip_via) {