diff --git a/docs/source/en/core/deployment.md b/docs/source/en/core/deployment.md
index 803c20c1f0..c0f4354d05 100644
--- a/docs/source/en/core/deployment.md
+++ b/docs/source/en/core/deployment.md
@@ -65,7 +65,7 @@ Arguments of dispatch can be configured in `config.{env}.js`.
 // config/config.default.js
 exports.cluster = {
   listen: {
-    port: '7001',
+    port: 7001,
     hostname: '127.0.0.1',
     // path: '/var/run/egg.sock',
   }
diff --git a/docs/source/zh-cn/core/deployment.md b/docs/source/zh-cn/core/deployment.md
index 98b731bab7..8b00673c05 100644
--- a/docs/source/zh-cn/core/deployment.md
+++ b/docs/source/zh-cn/core/deployment.md
@@ -76,7 +76,7 @@ $ egg-scripts start --port=7001 --daemon --title=egg-server-showcase
 // config/config.default.js
 exports.cluster = {
   listen: {
-    port: '7001',
+    port: 7001,
     hostname: '127.0.0.1',
     // path: '/var/run/egg.sock',
   }