diff --git a/docs/style.md b/docs/style.md
index fcdd7e2..33ac06c 100644
--- a/docs/style.md
+++ b/docs/style.md
@@ -266,11 +266,6 @@ const nodes = Array.from(foo);
 
 // best
 [1, 2, 3].map(x => x * x);
-
-// best
-[1, 2, 3].map((x,i) => {
-  return x * i;
-});
 ```
 
 箭头函数取代`Function.prototype.bind`，不应再用self/\_this/that绑定 this。