diff --git a/txcache/testutils_test.go b/txcache/testutils_test.go
index 165818be..2592a834 100644
--- a/txcache/testutils_test.go
+++ b/txcache/testutils_test.go
@@ -2,6 +2,7 @@ package txcache
 
 import (
 	"encoding/binary"
+	"math/big"
 	"math/rand"
 	"sync"
 	"time"
@@ -181,6 +182,12 @@ func (wrappedTx *WrappedTransaction) withGasLimit(gasLimit uint64) *WrappedTrans
 	return wrappedTx
 }
 
+func (wrappedTx *WrappedTransaction) withValue(value *big.Int) *WrappedTransaction {
+	tx := wrappedTx.Tx.(*transaction.Transaction)
+	tx.Value = value
+	return wrappedTx
+}
+
 func createFakeSenderAddress(senderTag int) []byte {
 	bytes := make([]byte, 32)
 	binary.LittleEndian.PutUint64(bytes, uint64(senderTag))