diff --git a/dapps/valuetransfers/packages/address/sort.go b/dapps/valuetransfers/packages/address/sort.go
deleted file mode 100644
index 933d74dd6df828c66c53b9cce05bcdf5044455cd..0000000000000000000000000000000000000000
--- a/dapps/valuetransfers/packages/address/sort.go
+++ /dev/null
@@ -1,25 +0,0 @@
-package address
-
-import (
-	"bytes"
-	"sort"
-)
-
-type sortedAddresses []Address
-
-func (s sortedAddresses) Len() int {
-	return len(s)
-}
-
-func (s sortedAddresses) Less(i, j int) bool {
-	return bytes.Compare(s[i][:], s[j][:]) < 0
-}
-
-func (s sortedAddresses) Swap(i, j int) {
-	s[i], s[j] = s[j], s[i]
-}
-
-// Sort function sorts the slice of addresses
-func Sort(addresses []Address) {
-	sort.Sort(sortedAddresses(addresses))
-}
diff --git a/dapps/valuetransfers/packages/transaction/outputs.go b/dapps/valuetransfers/packages/transaction/outputs.go
index 25511b27d5d6888e4ac64258d62c7ef94e4bae89..4cd77a3ff3962de5e9afb161117f1f420d8da24e 100644
--- a/dapps/valuetransfers/packages/transaction/outputs.go
+++ b/dapps/valuetransfers/packages/transaction/outputs.go
@@ -1,7 +1,9 @@
 package transaction
 
 import (
+	"bytes"
 	"github.com/iotaledger/hive.go/marshalutil"
+	"sort"
 
 	"github.com/iotaledger/goshimmer/dapps/valuetransfers/packages/address"
 	"github.com/iotaledger/goshimmer/packages/binary/datastructure/orderedmap"
@@ -21,7 +23,10 @@ func NewOutputs(outputs map[address.Address][]*balance.Balance) (result *Outputs
 	for a := range outputs {
 		toSort = append(toSort, a)
 	}
-	address.Sort(toSort)
+
+	sort.Slice(toSort, func(i, j int) bool {
+		return bytes.Compare(toSort[i][:], toSort[j][:]) < 0
+	})
 
 	result = &Outputs{orderedmap.New()}
 	for _, addr := range toSort {
diff --git a/dapps/valuetransfers/packages/transaction/outputs_test.go b/dapps/valuetransfers/packages/transaction/outputs_test.go
index 13e783a02fd2bfeeced9d2a8ac17f9d82852cf29..85d0fe6ebe5fd81055cb2d10f0d4de69ce8dfcb5 100644
--- a/dapps/valuetransfers/packages/transaction/outputs_test.go
+++ b/dapps/valuetransfers/packages/transaction/outputs_test.go
@@ -2,12 +2,12 @@ package transaction
 
 import (
 	"bytes"
+	"github.com/stretchr/testify/assert"
 
 	"testing"
 
 	"github.com/iotaledger/goshimmer/dapps/valuetransfers/packages/address"
 	"github.com/iotaledger/goshimmer/dapps/valuetransfers/packages/balance"
-	"github.com/magiconair/properties/assert"
 	"golang.org/x/crypto/blake2b"
 )
 
@@ -29,9 +29,6 @@ func TestOutputs(t *testing.T) {
 	}
 	out2 := NewOutputs(theMap2)
 
-	//t.Logf("%s", out1.String())
-	//t.Logf("%s", out2.String())
-
 	h1 := hashOutputs(t, out1)
 	h2 := hashOutputs(t, out2)
 
@@ -40,7 +37,7 @@ func TestOutputs(t *testing.T) {
 
 func hashOutputs(t *testing.T, out *Outputs) []byte {
 	h, err := blake2b.New256(nil)
-	assert.Equal(t, err, nil)
+	assert.NoError(t, err)
 
 	h.Write(out.Bytes())
 	return h.Sum(nil)
diff --git a/dapps/valuetransfers/packages/transaction/transaction_test.go b/dapps/valuetransfers/packages/transaction/transaction_test.go
index 4b2411b65c271b45caad18a6d90f45f216bd9cd2..38bee17bdb987c61c0159fbcfd8cda50b9cdf20a 100644
--- a/dapps/valuetransfers/packages/transaction/transaction_test.go
+++ b/dapps/valuetransfers/packages/transaction/transaction_test.go
@@ -38,7 +38,7 @@ func TestShortDataPayload(t *testing.T) {
 
 	dataPayload := []byte("data payload test")
 	err := tx.SetDataPayload(dataPayload)
-	assert.Equal(t, nil, err)
+	assert.NoError(t, err)
 
 	dpBack := tx.GetDataPayload()
 	assert.Equal(t, true, bytes.Equal(dpBack, dataPayload))
@@ -52,7 +52,7 @@ func TestShortDataPayload(t *testing.T) {
 	tx.essenceBytes = nil
 	dataPayload[2] = '?'
 	err = tx.SetDataPayload(dataPayload)
-	assert.Equal(t, nil, err)
+	assert.NoError(t, err)
 
 	// expect signature is not valid
 	check = tx.SignaturesValid()
@@ -70,7 +70,7 @@ func TestTooLongDataPayload(t *testing.T) {
 
 	dataPayload := []byte(strings.Repeat("1", MaxDataPayloadSize+1))
 	err := tx.SetDataPayload(dataPayload)
-	assert.Equal(t, true, err != nil)
+	assert.Error(t, err)
 }
 
 func TestMarshalingEmptyDataPayload(t *testing.T) {
@@ -90,9 +90,8 @@ func TestMarshalingEmptyDataPayload(t *testing.T) {
 
 	tx1 := Transaction{}
 	_, err := tx1.UnmarshalObjectStorageValue(v)
-	if err != nil {
-		assert.Error(t, err)
-	}
+	assert.NoError(t, err)
+
 	assert.Equal(t, true, tx1.SignaturesValid())
 	assert.Equal(t, true, bytes.Equal(tx1.ID().Bytes(), tx.ID().Bytes()))
 }
@@ -108,7 +107,7 @@ func TestMarshalingDataPayload(t *testing.T) {
 
 	dataPayload := []byte("data payload test")
 	err := tx.SetDataPayload(dataPayload)
-	assert.Equal(t, nil, err)
+	assert.NoError(t, err)
 
 	tx.Sign(sigScheme)
 	check := tx.SignaturesValid()
@@ -119,7 +118,7 @@ func TestMarshalingDataPayload(t *testing.T) {
 	tx1 := Transaction{}
 	_, err = tx1.UnmarshalObjectStorageValue(v)
 
-	assert.Equal(t, nil, err)
+	assert.NoError(t, err)
 	assert.Equal(t, true, tx1.SignaturesValid())
 
 	assert.Equal(t, true, bytes.Equal(tx1.ID().Bytes(), tx.ID().Bytes()))
@@ -136,13 +135,13 @@ func TestPutSignatureValid(t *testing.T) {
 
 	dataPayload := []byte("data payload test")
 	err := tx.SetDataPayload(dataPayload)
-	assert.Equal(t, nil, err)
+	assert.NoError(t, err)
 
 	signature := sigScheme.Sign(tx.EssenceBytes())
 	assert.Equal(t, signature.IsValid(tx.EssenceBytes()), true)
 
 	err = tx.PutSignature(signature)
-	assert.Equal(t, nil, err)
+	assert.NoError(t, err)
 
 	check := tx.SignaturesValid()
 	assert.Equal(t, true, check)
@@ -159,7 +158,7 @@ func TestPutSignatureInvalid(t *testing.T) {
 
 	dataPayload := []byte("data payload test")
 	err := tx.SetDataPayload(dataPayload)
-	assert.Equal(t, nil, err)
+	assert.NoError(t, err)
 
 	signatureValid := sigScheme.Sign(tx.EssenceBytes())
 	assert.Equal(t, true, signatureValid.IsValid(tx.EssenceBytes()))
@@ -171,22 +170,21 @@ func TestPutSignatureInvalid(t *testing.T) {
 
 	sigCorrupted, consumed, err := signaturescheme.BLSSignatureFromBytes(sigBytes)
 
-	assert.Equal(t, nil, err)
+	assert.NoError(t, err)
 	assert.Equal(t, consumed, len(sigBytes))
 	assert.Equal(t, false, sigCorrupted.IsValid(tx.EssenceBytes()))
 
 	err = tx.PutSignature(sigCorrupted)
 	// error expected
-	assert.Equal(t, true, err != nil)
+	assert.Error(t, err)
 
 	// 0 signatures is not valid
 	assert.Equal(t, true, !tx.SignaturesValid())
 
 	err = tx.PutSignature(signatureValid)
 	// no error expected
-	assert.Equal(t, nil, err)
+	assert.NoError(t, err)
 
 	// valid signatures expected
 	assert.Equal(t, true, tx.SignaturesValid())
-
 }