diff --git a/docs/document/level-0/ch05-webpage.md b/docs/document/level-0/ch05-webpage.md
index 3c5a77ec..81130cfb 100644
--- a/docs/document/level-0/ch05-webpage.md
+++ b/docs/document/level-0/ch05-webpage.md
@@ -36,7 +36,7 @@
    sudo ufw status
    ```
 
-   b. 如果输出如下，表明80和433端口未开启，需要执行c步骤
+   b. 如果输出如下，表明80和443端口未开启，需要执行c步骤
 
    ```shell
    Status: active