diff --git a/wallet/v1/srv.proto b/wallet/v1/srv.proto
index 291b007..21705ec 100644
--- a/wallet/v1/srv.proto
+++ b/wallet/v1/srv.proto
@@ -61,6 +61,6 @@ service WalletService {
   rpc WithdrawIRT(WithdrawIRTReq) returns (WithdrawIRTRes);
   rpc DepositIRT(DepositIRTReq) returns (IPGGetTokenRes);
 
-  rpc CalcBuyAsset(BuyAssetReq) returns (BuyAssetRes);
+  rpc CalcBuyAsset(BuyAssetReq) returns (CalcBuyAssetRes);
   rpc BuyAsset(BuyAssetReq) returns (BuyAssetRes);
 }