Hungary’s Tisza Party has filed its first proposed amendment to the country’s constitution, setting out a package of reforms, including one measure that would prevent Viktor Orbán from ever returning as prime minister.

The proposal, submitted as the Sixteenth Amendment to Hungary’s Fundamental Law, would require the support of two-thirds of members of Parliament to pass, a figure now attainable due to the majority achieved by Prime Minister Péter Magyar in last month’s election.

One measure would place an eight-year cap on service as prime minister. Under the text, anyone who has held the office for a combined total of at least eight years, even with interruptions, would no longer be eligible to be elected prime minister.

The rule would apply retroactively to terms served since May 2, 1990, meaning it would cover the full post-communist period. In practical terms, the measure would directly affect Orbán, whose years in office far exceed the proposed limit.