diff --git a/market/v1/msg.proto b/market/v1/msg.proto
index e5e07ed..0b9ac17 100644
--- a/market/v1/msg.proto
+++ b/market/v1/msg.proto
@@ -175,7 +175,8 @@ message DeclineMarketContractReq {
 
 message MarketContractReq {
   auth.v1.InternalIAM iam = 1;
-  uint64 order_id = 2; // Maker OrderID
-  double amount = 3;
-  wallet.v1.BuyAssetSide req_side = 4;
+  uint64 asset_id = 2;
+  uint64 order_id = 3; // Maker OrderID
+  double amount = 4;
+  wallet.v1.BuyAssetSide req_side = 5;
 }