diff --git a/MACA.md b/MACA.md
index f105f28..3c6f4e5 100644
--- a/MACA.md
+++ b/MACA.md
@@ -19,7 +19,7 @@
    -  **1.安装maca_sdk最新版本**
       ```bash
       yum install maca_sdk
-          ```
+      ```
 
    - **2.安装maca_sdk指定版本**
       ```bash