diff --git a/api/v2/service/coin_info.go b/api/v2/service/coin_info.go
index 655d2fbd4..4bca3f252 100644
--- a/api/v2/service/coin_info.go
+++ b/api/v2/service/coin_info.go
@@ -65,7 +65,7 @@ func (s *Service) CoinInfoById(ctx context.Context, req *pb.CoinIdRequest) (*pb.
 
 	coin := cState.Coins().GetCoin(types.CoinID(req.Id))
 	if coin == nil {
-		return new(pb.CoinInfoResponse), s.createError(status.New(codes.NotFound, "Coin not found"), transaction.EncodeError(transaction.EncodeError(code.NewCoinNotExists("", strconv.Itoa(int(req.Id))))))
+		return new(pb.CoinInfoResponse), s.createError(status.New(codes.NotFound, "Coin not found"), transaction.EncodeError(code.NewCoinNotExists("", strconv.Itoa(int(req.Id)))))
 	}
 
 	if timeoutStatus := s.checkTimeout(ctx); timeoutStatus != nil {
diff --git a/api/v2/service/estimate_coin_sell_all.go b/api/v2/service/estimate_coin_sell_all.go
index 41b352afb..31eb26b17 100644
--- a/api/v2/service/estimate_coin_sell_all.go
+++ b/api/v2/service/estimate_coin_sell_all.go
@@ -44,7 +44,7 @@ func (s *Service) EstimateCoinSellAll(ctx context.Context, req *pb.EstimateCoinS
 	} else {
 		coinToBuy = types.CoinID(req.GetCoinIdToBuy())
 		if !cState.Coins().Exists(coinToBuy) {
-			return new(pb.EstimateCoinSellAllResponse), s.createError(status.New(codes.NotFound, "Coin to buy not exists"), transaction.EncodeError(transaction.EncodeError(code.NewCoinNotExists("", coinToBuy.String()))))
+			return new(pb.EstimateCoinSellAllResponse), s.createError(status.New(codes.NotFound, "Coin to buy not exists"), transaction.EncodeError(code.NewCoinNotExists("", coinToBuy.String())))
 		}
 	}
 
diff --git a/api/v2/service/frozen.go b/api/v2/service/frozen.go
index e11d4c084..a566e4dc1 100644
--- a/api/v2/service/frozen.go
+++ b/api/v2/service/frozen.go
@@ -30,7 +30,7 @@ func (s *Service) Frozen(ctx context.Context, req *pb.FrozenRequest) (*pb.Frozen
 		coinID := types.CoinID(req.CoinId.GetValue())
 		reqCoin = cState.Coins().GetCoin(coinID)
 		if reqCoin == nil {
-			return new(pb.FrozenResponse), s.createError(status.New(codes.NotFound, "Coin not found"), transaction.EncodeError(transaction.EncodeError(code.NewCoinNotExists("", coinID.String()))))
+			return new(pb.FrozenResponse), s.createError(status.New(codes.NotFound, "Coin not found"), transaction.EncodeError(code.NewCoinNotExists("", coinID.String())))
 		}
 	}
 	var frozen []*pb.FrozenResponse_Frozen
diff --git a/core/transaction/unbond.go b/core/transaction/unbond.go
index a283a845d..10692b5d9 100644
--- a/core/transaction/unbond.go
+++ b/core/transaction/unbond.go
@@ -66,7 +66,7 @@ func (data UnbondData) BasicCheck(tx *Transaction, context *state.CheckState) *R
 		return &Response{
 			Code: code.StakeNotFound,
 			Log:  fmt.Sprintf("Stake of current user not found"),
-			Info: EncodeError(EncodeError(code.NewStakeNotFound(data.PubKey.String(), sender.String(), data.Coin.String(), context.Coins().GetCoin(data.Coin).GetFullSymbol()))),
+			Info: EncodeError(code.NewStakeNotFound(data.PubKey.String(), sender.String(), data.Coin.String(), context.Coins().GetCoin(data.Coin).GetFullSymbol())),
 		}
 	}
 
diff --git a/go.mod b/go.mod
index 68a39d716..f38d1d075 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/MinterTeam/minter-go-node
 go 1.15
 
 require (
-	github.com/MinterTeam/node-grpc-gateway v1.1.3-0.20200920180544-2bc88646bf02
+	github.com/MinterTeam/node-grpc-gateway v1.1.3-0.20200921073010-0e0331cde460
 	github.com/btcsuite/btcd v0.20.1-beta
 	github.com/c-bata/go-prompt v0.2.3
 	github.com/go-kit/kit v0.10.0
diff --git a/go.sum b/go.sum
index 02d54cec6..2e70ca8c2 100644
--- a/go.sum
+++ b/go.sum
@@ -7,8 +7,8 @@ github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym
 github.com/ChainSafe/go-schnorrkel v0.0.0-20200405005733-88cbf1b4c40d h1:nalkkPQcITbvhmL4+C4cKA87NW0tfm3Kl9VXRoPywFg=
 github.com/ChainSafe/go-schnorrkel v0.0.0-20200405005733-88cbf1b4c40d/go.mod h1:URdX5+vg25ts3aCh8H5IFZybJYKWhJHYMTnf+ULtoC4=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
-github.com/MinterTeam/node-grpc-gateway v1.1.3-0.20200920180544-2bc88646bf02 h1:HJBzwDqs7xSCYRkJ6ehUJ3+ScLzFY2gg8mo3aRptsPs=
-github.com/MinterTeam/node-grpc-gateway v1.1.3-0.20200920180544-2bc88646bf02/go.mod h1:LZ+Y8IYfSBx0IQZY+a9pHLjztMwmlaCQX2ncTejoE2o=
+github.com/MinterTeam/node-grpc-gateway v1.1.3-0.20200921073010-0e0331cde460 h1:joYzlUOfkSr2j+jmkMxXqLF5HguzwlYx6lfJmE6/brs=
+github.com/MinterTeam/node-grpc-gateway v1.1.3-0.20200921073010-0e0331cde460/go.mod h1:LZ+Y8IYfSBx0IQZY+a9pHLjztMwmlaCQX2ncTejoE2o=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=