<https://curia.europa.eu/juris/document/document.jsf?docid=247056&text=&dir=&...> The request has been made in proceedings between Top System SA and the Belgian State concerning the decompilation by SELOR, the Selection Office of the Federal Authorities (Belgium), of a computer program developed by Top System and forming part of an application in respect of which that selection office holds a user licence. [...] By its first question, the referring court asks, in essence, whether Article 5(1) of Directive 91/250 must be interpreted as meaning that the lawful purchaser of a computer program is entitled to decompile all or part of that program in order to correct errors affecting the operation of that program, including where the correction consists in disabling a function that is affecting the proper operation of the application of which the program forms a part. [...] In the light of the foregoing considerations, the answer to the first question referred is that Article 5(1) of Directive 91/250 must be interpreted as meaning that the lawful purchaser of a computer program is entitled to decompile all or part of that program in order to correct errors affecting its operation, including where the correction consists in disabling a function that is affecting the proper operation of the application of which that program forms a part. [...]