diff --git a/wallet/v1/msg.proto b/wallet/v1/msg.proto
index c313add..84e7fb4 100644
--- a/wallet/v1/msg.proto
+++ b/wallet/v1/msg.proto
@@ -553,6 +553,6 @@ message BuyAssetRes {
   int64 calculated_irt_amount = 4;
   double calculated_asset_amount = 5;
   double fee_amount = 6;
-  double discount_amount = 7;
+  int64 discount_amount = 7;
   double buy_min_amount = 8;
 }