diff --git a/bacnet-stack/ports/stm32f10x/dlmstp.c b/bacnet-stack/ports/stm32f10x/dlmstp.c
index 190f8f1f..1c1869f0 100644
--- a/bacnet-stack/ports/stm32f10x/dlmstp.c
+++ b/bacnet-stack/ports/stm32f10x/dlmstp.c
@@ -1234,7 +1234,7 @@ static bool MSTP_Master_Node_FSM(
                 Master_State = MSTP_MASTER_STATE_IDLE;
                 /* clear our flag we were holding for comparison */
                 MSTP_Flag.ReceivedValidFrame = false;
-            } else if (rs485_silence_time_elapsed(Treply_delay) ||
+            } else if (rs485_silence_elapsed(Treply_delay) ||
                 (pkt != NULL)) {
                 /* DeferredReply */
                 /* If no reply will be available from the higher layers */