Royal’s principal argument is that Wausau has already paid the trustees’ defense costs, and therefore, the trustees’ recovery in this case amounts to an unjustified windfall. Two cases cited and relied upon by the motion judge are inapposite. McGrath v. Mishara, 386 Mass. 74 (1982), involved claims by tenants of a rent controlled apartment against their landlord for improperly increasing their rent, and then, after the tenants refused to pay the increase, improperly deducting the increase from their security deposit. A Housing Court judge found that the landlord’s single act of withholding the security deposit in July, 1976, violated separate provisions of the Boston Rent Control Ordinance, G. L. c. 186, § 15B (governing improper retention of a tenant’s security deposit), and G. L. c. 93A, and awarded the tenants multiple damages under each of those statutes. The final judgment consisted of the sum of the damage award under each of the three statutes. In reversing the aggregate award of damages, the Supreme Judicial Court held that although the statutes had concurrent application, it was error to have awarded *248cumulative damages for the same wrong. Mishara, 386 Mass. at 83-84. Thus, Mishara speaks to a situation not presented in the instant case, where a single wrong gives rise to multiple causes of action between the same parties, and holds only that the damages awarded on each cause of action cannot be cumulative. Mishara does not involve the assignment of a cause of action to a different party.