diff --git a/bacnet-stack/demo/handler/dlenv.c b/bacnet-stack/demo/handler/dlenv.c
index 6006d510..795b4322 100644
--- a/bacnet-stack/demo/handler/dlenv.c
+++ b/bacnet-stack/demo/handler/dlenv.c
@@ -53,8 +53,10 @@ void dlenv_init(
         datalink_set(NULL);
     }
 #endif
-
 #if defined(BACDL_BIP)
+#if defined(BIP_DEBUG)
+    BIP_Debug = true;
+#endif
     pEnv = getenv("BACNET_IP_PORT");
     if (pEnv) {
         bip_set_port(strtol(pEnv, NULL, 0));
diff --git a/bacnet-stack/demo/whois/Makefile b/bacnet-stack/demo/whois/Makefile
index 71043fdc..fb643ac6 100644
--- a/bacnet-stack/demo/whois/Makefile
+++ b/bacnet-stack/demo/whois/Makefile
@@ -7,6 +7,7 @@ TARGET = bacwi
 #BACDL_DEFINE = -DBACDL_ETHERNET=1
 #BACDL_DEFINE = -DBACDL_ARCNET=1
 #BACDL_DEFINE = -DBACDL_MSTP=1
+#BACDL_DEFINE = -DBACDL_BIP=1 -DBIP_DEBUG
 BACDL_DEFINE = -DBACDL_BIP=1
 BACNET_DEFINES = -DBACFILE=1 -DPRINT_ENABLED=1 -DBACAPP_ALL
 DEFINES = $(BACNET_DEFINES) $(BACDL_DEFINE)