diff --git a/script/start_rpc_service.sh b/script/start_rpc_service.sh
index eb3d21214..628f63ac6 100644
--- a/script/start_rpc_service.sh
+++ b/script/start_rpc_service.sh
@@ -76,7 +76,7 @@ for ((i = 0; i < ${#service_filename[*]}; i++)); do
   list_to_string ${portList}
   service_ports=($ports_array)
 
-  portList2=$(cat $config_path | grep pushPrometheusPort | awk -F '[:]' '{print $NF}')
+  portList2=$(cat $config_path | grep ${service_prometheus_port_name[$i]} | awk -F '[:]' '{print $NF}')
   list_to_string $portList2
   prome_ports=($ports_array)
   #Start related rpc services based on the number of ports