diff --git a/openair2/RRC/NR_UE/rrc_UE.c b/openair2/RRC/NR_UE/rrc_UE.c
index ca9ff3e091..3bcb708464 100755
--- a/openair2/RRC/NR_UE/rrc_UE.c
+++ b/openair2/RRC/NR_UE/rrc_UE.c
@@ -2332,8 +2332,6 @@ nr_rrc_ue_decode_dcch(
                 if (first_rrcreconfigurationcomplete == 0) {
                     first_rrcreconfigurationcomplete = 1;
 #ifdef ITTI_SIM
-                    //wait send RRCReconfigurationComplete and InitialContextSetupResponse
-                    sleep(1);
                     as_nas_info_t initialNasMsg;
                     memset(&initialNasMsg, 0, sizeof(as_nas_info_t));
                     generateRegistrationComplete(&initialNasMsg, NULL);
@@ -2346,8 +2344,6 @@ nr_rrc_ue_decode_dcch(
                         itti_send_msg_to_task(TASK_RRC_NRUE, ctxt_pP->instance, message_p);
                         LOG_I(NR_RRC, " Send NAS_UPLINK_DATA_REQ message(RegistrationComplete)\n");
                     }
-                    //wait send RegistrationComplete
-                    usleep(100*150);
                     as_nas_info_t pduEstablishMsg;
                     memset(&pduEstablishMsg, 0, sizeof(as_nas_info_t));
                     generatePduSessionEstablishRequest(&pduEstablishMsg);
diff --git a/openair3/NAS/NR_UE/nr_nas_msg_sim.c b/openair3/NAS/NR_UE/nr_nas_msg_sim.c
index e0d3ddff72..35d8ab6a86 100644
--- a/openair3/NAS/NR_UE/nr_nas_msg_sim.c
+++ b/openair3/NAS/NR_UE/nr_nas_msg_sim.c
@@ -505,6 +505,8 @@ void generateSecurityModeComplete(as_nas_info_t *initialNasMsg)
 }
 
 void generateRegistrationComplete(as_nas_info_t *initialNasMsg, SORTransparentContainer               *sortransparentcontainer) {
+  //wait send RRCReconfigurationComplete and InitialContextSetupResponse
+  sleep(1);
   int length = 0;
   int size = 0;
   fgs_nas_message_t nas_msg;
@@ -583,6 +585,8 @@ void generateRegistrationComplete(as_nas_info_t *initialNasMsg, SORTransparentCo
 }
 
 void generatePduSessionEstablishRequest(as_nas_info_t *initialNasMsg){
+  //wait send RegistrationComplete
+  usleep(100*150);
   int size = 0;
   fgs_nas_message_t nas_msg;
   memset(&nas_msg, 0, sizeof(fgs_nas_message_t));