diff --git a/docs/design_docs/milvus_proto.md b/docs/design_docs/milvus_proto.md
index a8b4aa1edb..be4494d079 100644
--- a/docs/design_docs/milvus_proto.md
+++ b/docs/design_docs/milvus_proto.md
@@ -486,7 +486,7 @@ message LoadPartitionsRequest {
   // The collection name in milvus. (Required)
   string collection_name = 3;
 
-  // A name array of the partitions whcih you want to load. (Required)
+  // A name array of the partitions which you want to load. (Required)
   repeated string partition_names = 4;
 }
 ```