diff --git a/market/v1/msg.proto b/market/v1/msg.proto
index fcfa887..3018143 100644
--- a/market/v1/msg.proto
+++ b/market/v1/msg.proto
@@ -35,7 +35,7 @@ message CalcMarketReq {
   double amount = 4;
   double unit_price = 5;
   MarketParticipantType participant_type = 6;
-  market.v1.MarketOrderSide req_side = 7; // For Calculation : can be from asset or irt
+  wallet.v1.BuyAssetSide req_side = 7; // For Calculation : can be from asset or irt
 }
 
 message CalcMarketRes {
@@ -112,6 +112,11 @@ message MarketOrderList {
   uint32 total_count = 4;
 }
 
+/*
+ * participant_type: IS Maker/Taker
+ * side: IS Buying/Selling
+ * req_side: IS input (amount) in irt/asset 
+ * */
 message NewMarketReq {
   auth.v1.InternalIAM iam = 1;
   int64 asset_id = 2;