diff --git a/relayer/pkg/chainlink/txm/txm.go b/relayer/pkg/chainlink/txm/txm.go
index 640989da9..7b2453983 100644
--- a/relayer/pkg/chainlink/txm/txm.go
+++ b/relayer/pkg/chainlink/txm/txm.go
@@ -19,6 +19,7 @@ import (
 	"github.com/smartcontractkit/chainlink-common/pkg/services"
 	"github.com/smartcontractkit/chainlink-common/pkg/utils"
 
+	ethrpc "github.com/ethereum/go-ethereum/rpc"
 	"github.com/smartcontractkit/chainlink-starknet/relayer/pkg/starknet"
 )
 
@@ -199,12 +200,11 @@ func (txm *starktxm) broadcast(ctx context.Context, publicKey *felt.Felt, accoun
 	feeEstimate, err := account.EstimateFee(ctx, []starknetrpc.BroadcastTxn{tx}, simFlags, starknetrpc.BlockID{Tag: "latest"})
 	if err != nil {
 		var data any
-		var rpcError *starknetrpc.RPCError
-		if errors.As(err, &rpcError) {
-			data = rpcError.Data()
+		if err, ok := err.(ethrpc.DataError); ok {
+			data = err.ErrorData()
 		}
 		txm.lggr.Errorw("failed to estimate fee", "error", err, "data", data)
-		return txhash, fmt.Errorf("failed to estimate fee: %+w", err)
+		return txhash, fmt.Errorf("failed to estimate fee: %T %+w", err, err)
 	}
 
 	txm.lggr.Infow("Account", "account", account.AccountAddress)
@@ -252,9 +252,8 @@ func (txm *starktxm) broadcast(ctx context.Context, publicKey *felt.Felt, accoun
 	if err != nil {
 		// TODO: handle initial broadcast errors - what kind of errors occur?
 		var data any
-		var rpcError *starknetrpc.RPCError
-		if errors.As(err, &rpcError) {
-			data = rpcError.Data()
+		if err, ok := err.(ethrpc.DataError); ok {
+			data = err.ErrorData()
 		}
 		txm.lggr.Errorw("failed to invoke tx", "error", err, "data", data)
 		return txhash, fmt.Errorf("failed to invoke tx: %+w", err)