diff --git a/util/proto/marshal_test.go b/util/proto/marshal_test.go
index 7119c8f..f23641d 100644
--- a/util/proto/marshal_test.go
+++ b/util/proto/marshal_test.go
@@ -439,7 +439,7 @@ func TestFixed32Marshal(t *testing.T) {
 	})
 }
 
-func testMarshal(t *testing.T, c stablePrimitives, tr test.Primitives, wrongField bool) *test.Primitives {
+func testMarshal(t *testing.T, c stablePrimitives, tr *test.Primitives, wrongField bool) *test.Primitives {
 	var (
 		wire []byte
 		err  error
@@ -447,7 +447,7 @@ func testMarshal(t *testing.T, c stablePrimitives, tr test.Primitives, wrongFiel
 	wire, err = c.stableMarshal(nil, wrongField)
 	require.NoError(t, err)
 
-	wireGen, err := goproto.Marshal(&tr)
+	wireGen, err := goproto.Marshal(tr)
 	require.NoError(t, err)
 
 	if !wrongField {
@@ -470,7 +470,7 @@ func testBytesMarshal(t *testing.T, data []byte, wrongField bool) {
 		transport = test.Primitives{FieldA: data}
 	)
 
-	result := testMarshal(t, custom, transport, wrongField)
+	result := testMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Len(t, result.FieldA, len(data))
@@ -488,7 +488,7 @@ func testStringMarshal(t *testing.T, s string, wrongField bool) {
 		transport = test.Primitives{FieldB: s}
 	)
 
-	result := testMarshal(t, custom, transport, wrongField)
+	result := testMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Len(t, result.FieldB, len(s))
@@ -506,7 +506,7 @@ func testBoolMarshal(t *testing.T, b bool, wrongField bool) {
 		transport = test.Primitives{FieldC: b}
 	)
 
-	result := testMarshal(t, custom, transport, wrongField)
+	result := testMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Equal(t, b, result.FieldC)
@@ -521,7 +521,7 @@ func testInt32Marshal(t *testing.T, n int32, wrongField bool) {
 		transport = test.Primitives{FieldD: n}
 	)
 
-	result := testMarshal(t, custom, transport, wrongField)
+	result := testMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Equal(t, n, result.FieldD)
@@ -536,7 +536,7 @@ func testUInt32Marshal(t *testing.T, n uint32, wrongField bool) {
 		transport = test.Primitives{FieldE: n}
 	)
 
-	result := testMarshal(t, custom, transport, wrongField)
+	result := testMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Equal(t, n, result.FieldE)
@@ -551,7 +551,7 @@ func testInt64Marshal(t *testing.T, n int64, wrongField bool) {
 		transport = test.Primitives{FieldF: n}
 	)
 
-	result := testMarshal(t, custom, transport, wrongField)
+	result := testMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Equal(t, n, result.FieldF)
@@ -566,7 +566,7 @@ func testUInt64Marshal(t *testing.T, n uint64, wrongField bool) {
 		transport = test.Primitives{FieldG: n}
 	)
 
-	result := testMarshal(t, custom, transport, wrongField)
+	result := testMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Equal(t, n, result.FieldG)
@@ -581,7 +581,7 @@ func testFloat64Marshal(t *testing.T, n float64, wrongField bool) {
 		transport = test.Primitives{FieldJ: n}
 	)
 
-	result := testMarshal(t, custom, transport, wrongField)
+	result := testMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Equal(t, n, result.FieldJ)
@@ -596,7 +596,7 @@ func testEnumMarshal(t *testing.T, e SomeEnum, wrongField bool) {
 		transport = test.Primitives{FieldH: test.Primitives_SomeEnum(e)}
 	)
 
-	result := testMarshal(t, custom, transport, wrongField)
+	result := testMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.EqualValues(t, custom.FieldH, result.FieldH)
@@ -605,7 +605,7 @@ func testEnumMarshal(t *testing.T, e SomeEnum, wrongField bool) {
 	}
 }
 
-func testRepMarshal(t *testing.T, c stableRepPrimitives, tr test.RepPrimitives, wrongField bool) *test.RepPrimitives {
+func testRepMarshal(t *testing.T, c stableRepPrimitives, tr *test.RepPrimitives, wrongField bool) *test.RepPrimitives {
 	var (
 		wire []byte
 		err  error
@@ -613,7 +613,7 @@ func testRepMarshal(t *testing.T, c stableRepPrimitives, tr test.RepPrimitives,
 	wire, err = c.stableMarshal(nil, wrongField)
 	require.NoError(t, err)
 
-	wireGen, err := goproto.Marshal(&tr)
+	wireGen, err := goproto.Marshal(tr)
 	require.NoError(t, err)
 
 	if !wrongField {
@@ -636,7 +636,7 @@ func testRepeatedBytesMarshal(t *testing.T, data [][]byte, wrongField bool) {
 		transport = test.RepPrimitives{FieldA: data}
 	)
 
-	result := testRepMarshal(t, custom, transport, wrongField)
+	result := testRepMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Len(t, result.FieldA, len(data))
@@ -654,7 +654,7 @@ func testRepeatedStringMarshal(t *testing.T, s []string, wrongField bool) {
 		transport = test.RepPrimitives{FieldB: s}
 	)
 
-	result := testRepMarshal(t, custom, transport, wrongField)
+	result := testRepMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Len(t, result.FieldB, len(s))
@@ -672,7 +672,7 @@ func testRepeatedInt32Marshal(t *testing.T, n []int32, wrongField bool) {
 		transport = test.RepPrimitives{FieldC: n}
 	)
 
-	result := testRepMarshal(t, custom, transport, wrongField)
+	result := testRepMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Len(t, result.FieldC, len(n))
@@ -690,7 +690,7 @@ func testRepeatedUInt32Marshal(t *testing.T, n []uint32, wrongField bool) {
 		transport = test.RepPrimitives{FieldD: n}
 	)
 
-	result := testRepMarshal(t, custom, transport, wrongField)
+	result := testRepMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Len(t, result.FieldD, len(n))
@@ -708,7 +708,7 @@ func testRepeatedInt64Marshal(t *testing.T, n []int64, wrongField bool) {
 		transport = test.RepPrimitives{FieldE: n}
 	)
 
-	result := testRepMarshal(t, custom, transport, wrongField)
+	result := testRepMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Len(t, result.FieldE, len(n))
@@ -726,7 +726,7 @@ func testRepeatedUInt64Marshal(t *testing.T, n []uint64, wrongField bool) {
 		transport = test.RepPrimitives{FieldF: n}
 	)
 
-	result := testRepMarshal(t, custom, transport, wrongField)
+	result := testRepMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Len(t, result.FieldF, len(n))
@@ -744,7 +744,7 @@ func testFixed64Marshal(t *testing.T, n uint64, wrongField bool) {
 		transport = test.Primitives{FieldI: n}
 	)
 
-	result := testMarshal(t, custom, transport, wrongField)
+	result := testMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Equal(t, n, result.FieldI)
@@ -759,7 +759,7 @@ func testFixed32Marshal(t *testing.T, n uint32, wrongField bool) {
 		transport = test.Primitives{FieldK: n}
 	)
 
-	result := testMarshal(t, custom, transport, wrongField)
+	result := testMarshal(t, custom, &transport, wrongField)
 
 	if !wrongField {
 		require.Equal(t, n, result.FieldK)