diff --git a/docs/array.md b/docs/array.md
index 8c2b690..d12d4a3 100644
--- a/docs/array.md
+++ b/docs/array.md
@@ -941,7 +941,7 @@ array.group((num, index, array) => {
 下面是另一个例子。
 
 ```javascript
-[6.1, 4.2, 6.3].groupBy(Math.floor)
+[6.1, 4.2, 6.3].group(Math.floor)
 // { '4': [4.2], '6': [6.1, 6.3] }
 ```