diff --git a/Readme.md b/Readme.md
index d00aedf..ca78a8a 100644
--- a/Readme.md
+++ b/Readme.md
@@ -52,7 +52,7 @@ app.use((ctx, next) => {
   const start = new Date;
   return next().then(() => {
     const ms = new Date - start;
-    console.log(`${ctx.method} ${ctx.url} - ${ms}`);
+    console.log(`${ctx.method} ${ctx.url} - ${ms}ms`);
   });
 });
 
@@ -77,7 +77,7 @@ app.use(async (ctx, next) => {
   const start = new Date;
   await next();
   const ms = new Date - start;
-  console.log(`${ctx.method} ${ctx.url} - ${ms}`);
+  console.log(`${ctx.method} ${ctx.url} - ${ms}ms`);
 });
 
 // response
@@ -104,7 +104,7 @@ app.use(co.wrap(function *(ctx, next){
   const start = new Date;
   yield next();
   const ms = new Date - start;
-  console.log(`${ctx.method} ${ctx.url} - ${ms}`);
+  console.log(`${ctx.method} ${ctx.url} - ${ms}ms`);
 }));
 
 // response
@@ -131,7 +131,7 @@ app.use(convert(function *(next){
   const start = new Date;
   yield next;
   const ms = new Date - start;
-  console.log(`${this.method} ${this.url} - ${ms}`);
+  console.log(`${this.method} ${this.url} - ${ms}ms`);
 }));
 
 // response