From bc82f3f8eb4118081128c88db824044c175e26b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Federico=20Kunze=20K=C3=BCllmer?=
 <31522760+fedekunze@users.noreply.github.com>
Date: Tue, 28 Sep 2021 10:42:18 +0200
Subject: [PATCH] rpc: fix gas price (#596)

---
 ethereum/rpc/backend/backend.go | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/ethereum/rpc/backend/backend.go b/ethereum/rpc/backend/backend.go
index 6c1ffea1..e53e5eac 100644
--- a/ethereum/rpc/backend/backend.go
+++ b/ethereum/rpc/backend/backend.go
@@ -720,19 +720,22 @@ func (e *EVMBackend) RPCGasCap() uint64 {
 	return e.cfg.JSONRPC.GasCap
 }
 
-// RPCMinGasPrice return the minimum gas price for a transaction.
+// RPCMinGasPrice returns the minimum gas price for a transaction obtained from
+// the node config. If set value is 0, it will default to 20.
+
 func (e *EVMBackend) RPCMinGasPrice() int64 {
 	evmParams, err := e.queryClient.Params(context.Background(), &evmtypes.QueryParamsRequest{})
-	if err == nil {
-		minGasPrice := e.cfg.GetMinGasPrices()
-		for _, coin := range minGasPrice {
-			if coin.Denom == evmParams.Params.EvmDenom {
-				return coin.Amount.TruncateInt64()
-			}
-		}
+	if err != nil {
+		return ethermint.DefaultGasPrice
 	}
 
-	return ethermint.DefaultGasPrice
+	minGasPrice := e.cfg.GetMinGasPrices()
+	amt := minGasPrice.AmountOf(evmParams.Params.EvmDenom).TruncateInt64()
+	if amt == 0 {
+		return ethermint.DefaultGasPrice
+	}
+
+	return amt
 }
 
 // ChainConfig return the ethereum chain configuration