diff --git a/domain/miningmanager/mempool/mempool.go b/domain/miningmanager/mempool/mempool.go
index bae904119..45935ce0c 100644
--- a/domain/miningmanager/mempool/mempool.go
+++ b/domain/miningmanager/mempool/mempool.go
@@ -28,7 +28,7 @@ func newMempool(consensus externalapi.Consensus, dagParams *dagconfig.Params) *m
 	return mp
 }
 
-func (mp *mempool) ValidateAndInsertTransaction(transaction *externalapi.DomainTransaction, isHighPriority bool) (
+func (mp *mempool) ValidateAndInsertTransaction(transaction *externalapi.DomainTransaction, isHighPriority bool, allowOrphans bool) (
 	acceptedTransactions []*externalapi.DomainTransaction, err error) {
 
 	panic("mempool.ValidateAndInsertTransaction not implemented") // TODO (Mike)