diff --git a/market/v1/msg.proto b/market/v1/msg.proto
index 03285d5..2712ecd 100644
--- a/market/v1/msg.proto
+++ b/market/v1/msg.proto
@@ -158,6 +158,7 @@ message OrderListFilter {
   optional uint32 page_size = 20;
 }
 
+/* Contract */
 message ContractMarketRes {
   string link = 1;
   uint64 agreement_id = 2;