diff --git a/lib/webservice/index.js b/lib/webservice/index.js
index 7ca9f32..cdafe83 100644
--- a/lib/webservice/index.js
+++ b/lib/webservice/index.js
@@ -1,3 +1,4 @@
+const CLUSTER_MODE = false;
 const cluster = require('cluster');
 const numCPUs = require('os').cpus().length;
 const express = require('express');
@@ -12,7 +13,7 @@ const routerPriceplan = require('./router/priceplan');
 
 app.use('/apikey/:apikey/priceplan', routerPriceplan);
 
-if (cluster.isMaster) {
+if (CLUSTER_MODE && cluster.isMaster) {
     logger.info(`Master ${process.pid} is running`);
 
     // Fork workers.