diff --git a/CHANGELOG.md b/CHANGELOG.md
index c419b3d046..0448400755 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -41,6 +41,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 ### Bug Fixes
 
 * (rpc) [\#1190](https://github.com/evmos/ethermint/issues/1190) Fix `UnmarshalJSON` panic of breaking EVM and fee market `Params`.
+* (evm) [\#1187](https://github.com/evmos/ethermint/pull/1187) Fix `TxIndex` value (expected 0, actual 1) when trace the first tx of a block via `debug_traceTransaction` API.
 
 ## [v0.17.1] - 2022-07-13
 
diff --git a/x/evm/keeper/grpc_query.go b/x/evm/keeper/grpc_query.go
index 0115790690..c79c35de48 100644
--- a/x/evm/keeper/grpc_query.go
+++ b/x/evm/keeper/grpc_query.go
@@ -398,7 +398,10 @@ func (k Keeper) TraceTx(c context.Context, req *types.QueryTraceTxRequest) (*typ
 
 	tx := req.Msg.AsTransaction()
 	txConfig.TxHash = tx.Hash()
-	txConfig.TxIndex++
+	if len(req.Predecessors) > 0 {
+		txConfig.TxIndex++
+	}
+
 	result, _, err := k.traceTx(ctx, cfg, txConfig, signer, tx, req.TraceConfig, false)
 	if err != nil {
 		// error will be returned with detail status from traceTx