diff --git a/pkg/fedvolumebackup/backupschedule/backup_schedule_manager_test.go b/pkg/fedvolumebackup/backupschedule/backup_schedule_manager_test.go
index 2a6e7246fe..754e6da464 100644
--- a/pkg/fedvolumebackup/backupschedule/backup_schedule_manager_test.go
+++ b/pkg/fedvolumebackup/backupschedule/backup_schedule_manager_test.go
@@ -231,10 +231,10 @@ func TestCalculateExpiredBackups(t *testing.T) {
 
 	var (
 		now       = time.Now()
-		last10Min = now.Add(-time.Minute * 10).Unix()
-		last1Day  = now.Add(-time.Hour * 24 * 1).Unix()
-		last2Day  = now.Add(-time.Hour * 24 * 2).Unix()
-		last3Day  = now.Add(-time.Hour * 24 * 3).Unix()
+		last10Min = now.Add(-time.Minute * 10)
+		last1Day  = now.Add(-time.Hour * 24 * 1)
+		last2Day  = now.Add(-time.Hour * 24 * 2)
+		last3Day  = now.Add(-time.Hour * 24 * 3)
 	)
 
 	testCases := []*testCase{
@@ -387,12 +387,12 @@ func (h *helper) updateBackup(bk *v1alpha1.VolumeBackup) {
 	}, time.Second*10).Should(BeNil())
 }
 
-func fakeBackup(ts *int64) *v1alpha1.VolumeBackup {
+func fakeBackup(ts *time.Time) *v1alpha1.VolumeBackup {
 	backup := &v1alpha1.VolumeBackup{}
 	if ts == nil {
 		return backup
 	}
-	backup.Status.CommitTs = getTSOStr(*ts)
+	backup.CreationTimestamp = metav1.Time{Time: *ts}
 	return backup
 }