Conservative members of the British Parliament skipped voting on a bipartisan investigation into whether British Prime Minister Boris Johnson intentionally misled the legislature over “Partygate” on Thursday, allowing the investigation to proceed.

Johnson gave Conservative members of Parliament the option to forgo voting on the measure Thursday. The option was a surprising twist after Johnson said his administration would attempt to delay the vote earlier in the week. After five hours of debate, no members objected to the measure, and it passed without opposition, according to the BBC.