diff --git a/trunk/scripts/htbt.sh b/trunk/scripts/htbt.sh
index 8e057a75b..d54f91412 100755
--- a/trunk/scripts/htbt.sh
+++ b/trunk/scripts/htbt.sh
@@ -1,4 +1,5 @@
 #/bin/bash
+ip=`ifconfig 2>&1|grep "inet addr"|grep -v "127"|awk '{print $2}'|awk -F ':' '{print $2}'`
 for ((;;)); do
 	echo "heatbeat at `date`"
 	curl 'http://ossrs.net:8085/api/v1/servers' -H 'Content-Type: text/html' --data-binary "{\"ip\":\"${ip}\",\"device_id\":\"respberry-pi2\"}" && echo ""