diff --git a/source/chapter2/07_Closures.md b/source/chapter2/07_Closures.md
index 07a943ee..e84c435a 100755
--- a/source/chapter2/07_Closures.md
+++ b/source/chapter2/07_Closures.md
@@ -237,7 +237,7 @@ let strings = numbers.map {
     }
     return output
 }
-// strings 常量被推断为字符串类型数组，即 String[]
+// strings 常量被推断为字符串类型数组，即 [String]
 // 其值为 ["OneSix", "FiveEight", "FiveOneZero"]
 ```