diff --git a/docs/function.md b/docs/function.md
index 0c35f8c..a47cc07 100644
--- a/docs/function.md
+++ b/docs/function.md
@@ -497,7 +497,7 @@ const full = ({ first, last }) => first + ' ' + last;
 
 // 等同于
 function full( person ){
-  return person.first + ‘ ‘ + person.name;
+  return person.first + ' ' + person.name;
 }
 ```