diff --git a/docs/design_docs/datanode_recovery_design_0513_2021.md b/docs/design_docs/datanode_recovery_design_0513_2021.md
index bedd8dbcaf..9efb9ff608 100644
--- a/docs/design_docs/datanode_recovery_design_0513_2021.md
+++ b/docs/design_docs/datanode_recovery_design_0513_2021.md
@@ -134,7 +134,7 @@ type dataSyncService struct {
 }
 ```
 
-DataNode Init -> Resigter to etcd -> Discovery data service -> Discover master service -> IDLE
+DataNode Init -> Register to etcd -> Discovery data service -> Discover master service -> IDLE
 
 WatchDmChannels -> new dataSyncService -> HEALTH