Polish President Andrzej Duda has announced he is vetoing a controversial law to replace Supreme Court judges with government nominees.
Three key judicial reforms have been passed by Poland’s parliament, prompting days of demonstrations across the country.
Before they become law, they require approval by the president.
The changes have also set Poland’s right-wing government on a collision course with the European Union.
The European Commission had threatened to impose sanctions this week if the reforms were not scrapped. European Council President Donald Tusk, a former Polish prime minister, had warned of a “black scenario that could ultimately lead to the marginalisation of Poland in Europe”.