diff --git a/proto/api/v2/tag_service.proto b/proto/api/v2/tag_service.proto
index 4de1434a3..2a53138d6 100644
--- a/proto/api/v2/tag_service.proto
+++ b/proto/api/v2/tag_service.proto
@@ -46,8 +46,7 @@ message BatchUpsertTagRequest {
   repeated UpsertTagRequest requests = 1;
 }
 
-message BatchUpsertTagResponse {
-}
+message BatchUpsertTagResponse {}
 
 message ListTagsRequest {
   // The creator of tags.