diff --git a/openair3/NAS/NR_UE/nr_nas_msg.c b/openair3/NAS/NR_UE/nr_nas_msg.c
index 8a51111cf3..f78caf39f9 100644
--- a/openair3/NAS/NR_UE/nr_nas_msg.c
+++ b/openair3/NAS/NR_UE/nr_nas_msg.c
@@ -1565,8 +1565,12 @@ void *nas_nrue(void *args_p)
         break;
       }
 
-      case NR_NAS_CONN_RELEASE_IND:
-        LOG_I(NAS, "[UE %ld] Received %s: cause %u\n", nas->UE_id, ITTI_MSG_NAME(msg_p), NR_NAS_CONN_RELEASE_IND(msg_p).cause);
+      case NR_NAS_CONN_RELEASE_IND: {
+        LOG_I(NAS, "[UE %ld] Received %s: cause %s\n",
+              nas->UE_id, ITTI_MSG_NAME (msg_p), nr_release_cause_desc[NR_NAS_CONN_RELEASE_IND (msg_p).cause]);
+        /* In N1 mode, upon indication from lower layers that the access stratum connection has been released,
+           the UE shall enter 5GMM-IDLE mode and consider the N1 NAS signalling connection released (3GPP TS 24.501) */
+        nas->fiveGMM_mode = FGS_IDLE;
         // TODO handle connection release
         if (nas->termination_procedure) {
           /* the following is not clean, but probably necessary: we need to give
@@ -1577,7 +1581,7 @@ void *nas_nrue(void *args_p)
           itti_wait_tasks_unblock(); /* will unblock ITTI to stop nr-uesoftmodem */
         }
         break;
-
+      }
       case NAS_UPLINK_DATA_CNF:
         LOG_I(NAS,
               "[UE %ld] Received %s: UEid %u, errCode %u\n",