diff --git a/src/mod/endpoints/mod_sofia/sofia_reg.c b/src/mod/endpoints/mod_sofia/sofia_reg.c
index 97dfb73135..f74d47d3bb 100644
--- a/src/mod/endpoints/mod_sofia/sofia_reg.c
+++ b/src/mod/endpoints/mod_sofia/sofia_reg.c
@@ -886,10 +886,19 @@ uint8_t sofia_reg_handle_register(nua_t *nua, sofia_profile_t *profile, nua_hand
 				if (!strcasecmp(v_contact_str, "NDLB-connectile-dysfunction-2.0")) {
 					char *path_encoded;
 					size_t path_encoded_len = (strlen(contact_str) * 3) + 1;
+					char my_contact_str[1024];
+
+					if (contact->m_url->url_params) {
+						switch_snprintf(my_contact_str, sizeof(my_contact_str), "%s <sip:%s@%s:%d;%s%s;fs_nat=yes>",
+										display, contact->m_url->url_user, url_ip, network_port, contact->m_url->url_params, received_data);
+					} else {
+						switch_snprintf(my_contact_str, sizeof(my_contact_str), "%s <sip:%s@%s:%d%s;fs_nat=yes>", display, contact->m_url->url_user, url_ip,
+										network_port, received_data);
+					}
 
 					switch_zmalloc(path_encoded, path_encoded_len);
 					switch_copy_string(path_encoded, ";fs_nat=yes;fs_path=", 20);
-					switch_url_encode(contact_str, path_encoded + 22, path_encoded_len - 20);
+					switch_url_encode(my_contact_str, path_encoded + 22, path_encoded_len - 20);
 					reg_desc = "Registered(AUTO-NAT-2.0)";
 					exptime = 20;
 				} else {