diff --git a/zh-cn/device-dev/driver/driver-platform-mmc-develop.md b/zh-cn/device-dev/driver/driver-platform-mmc-develop.md
index 8c454e5bf61cb88e4b19013dd587362693661bc1..b0624652da2a2948344a5ba0a8d7e55e6a375be9 100755
--- a/zh-cn/device-dev/driver/driver-platform-mmc-develop.md
+++ b/zh-cn/device-dev/driver/driver-platform-mmc-develop.md
@@ -318,7 +318,7 @@ MMC模块适配的三个环节是配置属性文件，实例化驱动入口，
           ...
           ret = HimciHostInit(host, cntlr);// 厂商自定义的初始化，失败就 goto _ERR;
           ...
-          ret = MmcCntlrAdd(cntlr);         // 调用核心层函数 失败就goto _ERR;
+          ret = MmcCntlrAdd(cntlr);        // 调用核心层函数 失败就goto _ERR;
           ...
           (void)MmcCntlrAddDetectMsgToQueue(cntlr);// 将卡检测消息添加到队列中。
           HDF_LOGD("HimciMmcBind: success.");