diff --git a/targets/RT/USER/lte-ue.c b/targets/RT/USER/lte-ue.c
index 14f841df4ba1c27f4cbb1b3e91ba3a10af6b66e6..b78bf36ed76079df5ad19151128a7c76367efcc4 100644
--- a/targets/RT/USER/lte-ue.c
+++ b/targets/RT/USER/lte-ue.c
@@ -775,14 +775,21 @@ static void *UE_thread_rxn_txnp4(void *arg)
     }
 
     if ((subframe_select( &UE->frame_parms, proc->subframe_tx) == SF_UL) ||
-	(UE->frame_parms.frame_type == FDD) ||
-	(subframe_select( &UE->frame_parms, proc->subframe_tx ) == SF_S)) {
+	(UE->frame_parms.frame_type == FDD) ) {
 
       if (UE->mode != loop_through_memory) {
 	phy_procedures_UE_TX(UE,proc,0,0,UE->mode,no_relay);
       }
     }
 
+    if ((subframe_select( &UE->frame_parms, proc->subframe_tx) == SF_S) &&
+  (UE->frame_parms.frame_type == TDD)) {
+
+      if (UE->mode != loop_through_memory) {
+  phy_procedures_UE_S_TX(UE,0,0,no_relay);
+      }
+    }
+
     VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_UE_THREAD_RXTX0+(proc->subframe_rx&1), 0 );