diff --git a/engine/transaction/record/record_outline_test.go b/engine/transaction/record/record_outline_test.go
index 87efdb43..02c842bd 100644
--- a/engine/transaction/record/record_outline_test.go
+++ b/engine/transaction/record/record_outline_test.go
@@ -277,8 +277,7 @@ func TestRecordOutlineOpReturnErrorCases(t *testing.T) {
 			err := service.RecordTransactionOutline(context.Background(), test.outline)
 
 			// then:
-			then.WithErrorIs(err, test.expectErr)
-			then.NothingChanged()
+			then.WithErrorIs(err, test.expectErr).NothingChanged()
 		})
 	}
 }
@@ -312,8 +311,7 @@ func TestOnBroadcastErr(t *testing.T) {
 	err := service.RecordTransactionOutline(context.Background(), outline)
 
 	// then:
-	then.WithErrorIs(err, txerrors.ErrTxBroadcast)
-	then.NothingChanged()
+	then.WithErrorIs(err, txerrors.ErrTxBroadcast).NothingChanged()
 }
 
 func ptr[T any](value T) *T {
diff --git a/engine/transaction/record/testabilities/assert_record_outline.go b/engine/transaction/record/testabilities/assert_record_outline.go
index 67ac575a..8775d6e7 100644
--- a/engine/transaction/record/testabilities/assert_record_outline.go
+++ b/engine/transaction/record/testabilities/assert_record_outline.go
@@ -7,13 +7,16 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
+type ErrorAssert interface {
+	NothingChanged()
+}
+
 type RecordOutlineAssert interface {
 	WithNoError(err error) SuccessfullyCreatedRecordOutlineAssertion
-	WithErrorIs(err, expectedError error)
+	WithErrorIs(err, expectedError error) ErrorAssert
 
 	StoredOutputs([]database.Output) RecordOutlineAssert
 	StoredData([]database.Data) RecordOutlineAssert
-	NothingChanged() RecordOutlineAssert
 }
 
 type SuccessfullyCreatedRecordOutlineAssertion interface {
@@ -40,9 +43,10 @@ func (a *assert) WithNoError(err error) SuccessfullyCreatedRecordOutlineAssertio
 	return a
 }
 
-func (a *assert) WithErrorIs(err, expectedError error) {
+func (a *assert) WithErrorIs(err, expectedError error) ErrorAssert {
 	require.Error(a.t, err, "Record transaction outline has no error")
 	require.ErrorIs(a.t, err, expectedError, "Record transaction outline has wrong error")
+	return a
 }
 
 func (a *assert) Broadcasted(txID string) SuccessfullyCreatedRecordOutlineAssertion {
@@ -69,8 +73,7 @@ func (a *assert) StoredData(data []database.Data) RecordOutlineAssert {
 	return a
 }
 
-func (a *assert) NothingChanged() RecordOutlineAssert {
+func (a *assert) NothingChanged() {
 	require.ElementsMatch(a.t, a.given.initialOutputs, a.given.repository.GetAllOutputs(), "Outputs are changed")
 	require.ElementsMatch(a.t, a.given.initialData, a.given.repository.GetAllData(), "Data are changed")
-	return a
 }