diff --git a/targets/RT/USER/lte-softmodem.c b/targets/RT/USER/lte-softmodem.c
index ee4344cd2d3eb8a248d4d2924ad2fd427241c4d0..59b2604ec5987b4dfd831d598d16d0885c545b16 100644
--- a/targets/RT/USER/lte-softmodem.c
+++ b/targets/RT/USER/lte-softmodem.c
@@ -3163,7 +3163,7 @@ int main( int argc, char **argv )
       UE[CC_id]->tx_power_max_dBm = tx_max_power[CC_id];
 
 
-#ifdef EXMIMO
+#if defined(EXMIMO) || defined(OAI_USRP) // 2016-04-27 wilson also set TDD N_TA_offset with USRP
       //N_TA_offset
       if (UE[CC_id]->lte_frame_parms.frame_type == TDD) {
         if (UE[CC_id]->lte_frame_parms.N_RB_DL == 100)