diff --git a/market/v1/msg.proto b/market/v1/msg.proto
index 0b9ac17..d1d8158 100644
--- a/market/v1/msg.proto
+++ b/market/v1/msg.proto
@@ -59,17 +59,18 @@ message MarketOrder {
   MarketOrderSide side = 8;
   MarketOrderStatus status = 9;
   int64 from = 10;
-  auth.v1.UserIdentityBasic from_identity = 11;
-  wallet.v1.Commission commission = 12;
-  double completed_amount = 13;
-  double available_amount = 14;
-  string created_at = 15;
-  string updated_at = 16;
-  bool is_public = 17;
-  wallet.v1.TransactionList trx = 18;
-  repeated string tags = 19;
-  repeated string comment = 20;
-  optional MarketOrder source = 21; // purchase is done via this field
+  MarketParticipantType participant_type = 11;
+  auth.v1.UserIdentityBasic from_identity = 12;
+  wallet.v1.Commission commission = 13;
+  double completed_amount = 14;
+  double available_amount = 15;
+  string created_at = 16;
+  string updated_at = 17;
+  bool is_public = 18;
+  wallet.v1.TransactionList trx = 19;
+  repeated string tags = 20;
+  repeated string comment = 21;
+  optional MarketOrder source = 22; // purchase is done via this field
   // repeated string attachments = 14; // possible files included by
   // seller/buyer
 }