diff --git a/market/v1/msg.proto b/market/v1/msg.proto
index c717b7b..b18ebe3 100644
--- a/market/v1/msg.proto
+++ b/market/v1/msg.proto
@@ -88,7 +88,7 @@ message MarketAssetList {
   uint32 total_count = 4;
 }
 
-message PurchaseReq {
+message MatchOrderReq {
   auth.v1.InternalIAM iam = 1;
   uint64 order_id = 2;
   double amount = 3;
@@ -97,7 +97,7 @@ message PurchaseReq {
   optional auth.v1.TFA tfa = 5;
 }
 
-message PurchaseRes {
+message MatchOrderRes {
   uint64 order_id = 1;
   double calculated_irt_amount = 2;
   double calculated_asset_amount = 3;