diff --git a/docs/design_docs/milvus_create_index_en.md b/docs/design_docs/milvus_create_index_en.md
index 719a224546..446202ea49 100644
--- a/docs/design_docs/milvus_create_index_en.md
+++ b/docs/design_docs/milvus_create_index_en.md
@@ -72,7 +72,7 @@ type createIndexTask struct {
 
    - `PostExecute`, `CreateIndexTask` does nothing at this phase, and return directly.
 
-4. `RootCoord` would wraps the `CreateIndex` request into `CreateIndexReqTask`, and then call function `executeTask`. `executeTask` would return until the `context` is done or `CreateIndexReqTask.Execute` returned.
+4. `RootCoord` would wrap the `CreateIndex` request into `CreateIndexReqTask`, and then call function `executeTask`. `executeTask` would return until the `context` is done or `CreateIndexReqTask.Execute` returned.
 
 ```go
 type reqTask interface {