diff --git a/srsepc/src/mme/s1ap_nas_transport.cc b/srsepc/src/mme/s1ap_nas_transport.cc
index 27b6e4bb7..102c27e14 100644
--- a/srsepc/src/mme/s1ap_nas_transport.cc
+++ b/srsepc/src/mme/s1ap_nas_transport.cc
@@ -428,7 +428,7 @@ s1ap_nas_transport::handle_nas_guti_attach_request(uint32_t enb_ue_s1ap_id,
       }
       else
       {
-        //NAS integrity 
+        //NAS integrity failed. Re-start quthentication process. 
       }
     }
     else