diff --git a/executables/nr-ue.c b/executables/nr-ue.c
index 530c2ba103..e2aec679db 100644
--- a/executables/nr-ue.c
+++ b/executables/nr-ue.c
@@ -802,6 +802,8 @@ void *UE_thread(void *arg)
   UE->is_synchronized = 0;
   int tmp2 = UE->rfdevice.trx_start_func(&UE->rfdevice);
   AssertFatal(tmp2 == 0, "Could not start the device\n");
+  if (usrp_tx_thread == 1)
+    UE->rfdevice.trx_write_init(&UE->rfdevice);
 
   notifiedFIFO_t nf;
   initNotifiedFIFO(&nf);