diff --git a/bacnet-stack/demo/handler/s_wpm.c b/bacnet-stack/demo/handler/s_wpm.c
index 715b7984..867d5a0b 100644
--- a/bacnet-stack/demo/handler/s_wpm.c
+++ b/bacnet-stack/demo/handler/s_wpm.c
@@ -69,6 +69,10 @@ uint8_t Send_Write_Property_Multiple_Request_Data(
     int pdu_len = 0;
     int bytes_sent = 0;
     BACNET_NPDU_DATA npdu_data;
+    
+    /* if we are forbidden to send, don't send! */
+    if (!dcc_communication_enabled())
+        return 0;
 
     /* is the device bound? */
     status = address_get_by_device(device_id, &max_apdu, &dest);