diff --git a/targets/RT/USER/lte-ue.c b/targets/RT/USER/lte-ue.c
index 0002c4260530cfca29c6caa660208eacf65ae6fe..3b84e8ea97987ef9266681ad2a9623d9efebf70a 100644
--- a/targets/RT/USER/lte-ue.c
+++ b/targets/RT/USER/lte-ue.c
@@ -699,6 +699,7 @@ void *UE_thread(void *arg) {
 		AssertFatal ( 0== pthread_mutex_unlock(&UE->proc.mutex_synch), "");
             } else {
 #if OAISIM
+              (void)dummy_rx; /* avoid gcc warnings */
               usleep(500);
 #else
                 // grab 10 ms of signal into dummy buffer