diff --git a/srsenb/rb.conf.example b/srsenb/rb.conf.example
index dc19c63f3..9a5bc5d44 100644
--- a/srsenb/rb.conf.example
+++ b/srsenb/rb.conf.example
@@ -5,14 +5,12 @@
 // srb1_config = {
 //   rlc_config = {
 //     ul_am = {
-//       sn_field_len = 12;
 //       t_poll_retx = 45;
 //       poll_pdu = -1;
 //       poll_byte = -1;
 //       max_retx_thresh = 4;
 //     };
 //     dl_am = {
-//       sn_field_len = 12;
 //       t_reassembly = 50;
 //       t_status_prohibit = 50;
 //     };
@@ -22,7 +20,6 @@
 // srb2_config = {
 //   rlc_config = {
 //     ul_am = {
-//       sn_field_len = 12;
 //       t_poll_retx = 45;
 //       poll_pdu = -1;
 //       poll_byte = -1;