diff --git a/pkg/eth/backend_utils.go b/pkg/eth/backend_utils.go
index 6965b6dd..cf7246a7 100644
--- a/pkg/eth/backend_utils.go
+++ b/pkg/eth/backend_utils.go
@@ -202,7 +202,7 @@ func NewRPCTransaction(tx *types.Transaction, blockHash common.Hash, blockNumber
 			price := math.BigMin(new(big.Int).Add(tx.GasTipCap(), baseFee), tx.GasFeeCap())
 			result.GasPrice = (*hexutil.Big)(price)
 		} else {
-			result.GasPrice = nil
+			result.GasPrice = (*hexutil.Big)(tx.GasFeeCap())
 		}
 	}
 	return result