diff --git a/docs/book/04-Operators.md b/docs/book/04-Operators.md
index 40ae0a9f..14f8fcf7 100644
--- a/docs/book/04-Operators.md
+++ b/docs/book/04-Operators.md
@@ -1436,7 +1436,7 @@ public class AllOps {
 
 ```java
 // operators/Overflow.java
-// 厉害了！内存溢出
+// 厉害了！数据溢出了！
 public class Overflow {
     public static void main(String[] args) {
         int big = Integer.MAX_VALUE;