I en situation som den, der foreligger i hovedsagen, skal den nationale domstol således i henhold til fællesskabsretten pålægge støttemodtageren at betale renter for den periode, hvor der forelå ulovlighed.
In a situation such as that in the main proceedings, the national court must therefore, applying Community law, order the aid recipient to pay interest in respect of the period of unlawfulness.