diff --git a/tiflash/create-tiflash-replicas.md b/tiflash/create-tiflash-replicas.md
index 366d373fcd47..6939031b0c1b 100644
--- a/tiflash/create-tiflash-replicas.md
+++ b/tiflash/create-tiflash-replicas.md
@@ -126,7 +126,7 @@ SELECT TABLE_NAME FROM information_schema.tables where TABLE_SCHEMA = "<db_name>
     ```sql
     -- 这两个参数默认值都为 100MiB，即用于副本同步的快照最大占用的磁盘带宽不超过 100MiB/s。
     SET CONFIG tikv `server.snap-io-max-bytes-per-sec` = '300MiB';
-    SET CONFIG tiflash `raftstore-proxy.server.snap-max-write-bytes-per-sec` = '300MiB';
+    SET CONFIG tiflash `raftstore-proxy.server.snap-io-max-bytes-per-sec` = '300MiB';
     ```
 
     以上 SQL 语句执行后，配置修改立即生效，无需重启集群。但由于副本同步速度还受到 PD 副本速度控制，因此当前你还无法观察到副本同步速度提升。
@@ -165,7 +165,7 @@ SELECT TABLE_NAME FROM information_schema.tables where TABLE_SCHEMA = "<db_name>
 
     ```sql
     SET CONFIG tikv `server.snap-io-max-bytes-per-sec` = '100MiB';
-    SET CONFIG tiflash `raftstore-proxy.server.snap-max-write-bytes-per-sec` = '100MiB';
+    SET CONFIG tiflash `raftstore-proxy.server.snap-io-max-bytes-per-sec` = '100MiB';
     ```
 
 ## 设置可用区