Daiva Lileikienė, Karolina Keršytė and Gabrielė Tavoraitė successfully represented the client Mildat sp. z o.o. in a dispute with the Defence Resources Agency under the Ministry of Defence. The dispute arose from the client’s qualifications. On behalf of the client, we succeeded in proving that the Supreme Court’s case law does not prohibit the client from clarifying its offer once by submitting an additional executed contract. The court also clarified that the proper and successful performance of a contract is to be evaluated under Lithuanian law, irrespective of the law of the place of performance.