diff --git a/bacnet-stack/demo/handler/h_whois.c b/bacnet-stack/demo/handler/h_whois.c
index 94afa9ec..8565140c 100644
--- a/bacnet-stack/demo/handler/h_whois.c
+++ b/bacnet-stack/demo/handler/h_whois.c
@@ -58,7 +58,7 @@ void handler_who_is(
         whois_decode_service_request(service_request, service_len, &low_limit,
         &high_limit);
     if (len == 0)
-        Send_I_Am(&Handler_Transmit_Buffer[0], src);
+        Send_I_Am(&Handler_Transmit_Buffer[0]);
     else if (len != -1) {
         /* is my device id within the limits? */
         if (((Device_Object_Instance_Number() >= (uint32_t) low_limit) &&
@@ -67,7 +67,7 @@ void handler_who_is(
             /* BACnet wildcard is the max instance number - everyone responds */
             ((BACNET_MAX_INSTANCE >= (uint32_t) low_limit) &&
                 (BACNET_MAX_INSTANCE <= (uint32_t) high_limit)))
-            Send_I_Am(&Handler_Transmit_Buffer[0], src);
+            Send_I_Am(&Handler_Transmit_Buffer[0]);
     }
 
     return;