diff --git a/content/post/nginx.md b/content/post/nginx.md
index 758afd6..884368f 100644
--- a/content/post/nginx.md
+++ b/content/post/nginx.md
@@ -276,7 +276,7 @@ location /websocket/ {
     }
     ```
 
-## 创建 ssl 密钥
+## 自签 ssl 证书
 ```bash
 mkdir /etc/nginx/ssl && cd /etc/nginx/ssl
 openssl genrsa -out ssl.key 2048