diff --git a/pkg/innerring/processors/alphabet/processor.go b/pkg/innerring/processors/alphabet/processor.go
index 546e134f4..0b5a7c145 100644
--- a/pkg/innerring/processors/alphabet/processor.go
+++ b/pkg/innerring/processors/alphabet/processor.go
@@ -79,6 +79,5 @@ func (np *Processor) ListenerHandlers() []event.HandlerInfo {
 
 // TimersHandlers for the 'Timers' event producer.
 func (np *Processor) TimersHandlers() []event.HandlerInfo {
-
 	return nil
 }
diff --git a/pkg/innerring/processors/settlement/audit/util.go b/pkg/innerring/processors/settlement/audit/util.go
index c0208223b..b354d56f5 100644
--- a/pkg/innerring/processors/settlement/audit/util.go
+++ b/pkg/innerring/processors/settlement/audit/util.go
@@ -31,7 +31,7 @@ func (t *transferTable) transfer(tx *transferTx) {
 	m, ok := t.txs[from]
 	if !ok {
 		if m, ok = t.txs[to]; ok {
-			from, to = to, from
+			to = from // ignore `from = to` swap because `from` doesn't require
 			tx.amount.Neg(tx.amount)
 		} else {
 			m = make(map[string]*transferTx, 1)