diff --git a/script/start_rpc_service.sh b/script/start_rpc_service.sh
index 3d5734cb1..a9c6e0288 100644
--- a/script/start_rpc_service.sh
+++ b/script/start_rpc_service.sh
@@ -79,12 +79,13 @@ for ((i = 0; i < ${#service_filename[*]}; i++)); do
   portList2=$(cat $config_path | grep ${service_prometheus_port_name[$i]} | awk -F '[:]' '{print $NF}')
   list_to_string $portList2
   prome_ports=($ports_array)
+  echo $prome_ports
   #Start related rpc services based on the number of ports
   for j in ${service_ports}; do
     #Start the service in the background
     #    ./${service_filename[$i]} -port $j &
     
-    cmd="./${service_filename[$i]} -port $j -prometheus_port ${prome_ports[$i]}"
+    cmd="./${service_filename[$i]} -port $j -prometheus_port ${prome_ports[$j]}"
     if [ $i -eq 0 -o $i -eq 1 ]; then
       cmd="./${service_filename[$i]} -port $j"
     fi